Indulge in the exquisite simplicity of these Tomato and Boursin Tartlets – a truly elegant appetizer that marries the flakiness of buttery puff pastry with the creamy richness of Boursin cheese, the sweet depth of caramelized onions, and the vibrant freshness of ripe tomatoes. Each bite is a harmonious blend of textures and flavors, promising an unforgettable culinary experience.
Imagine serving a gourmet appetizer that looks like it took hours of painstaking effort, yet comes together with remarkable ease. That’s the magic of these Puff Pastry Tarts. By utilizing readily available store-bought puff pastry and the delightful creaminess of Boursin cheese, you can effortlessly create an impressive dish that will captivate your guests and earn you endless compliments. These tartlets are not just food; they are a statement of sophisticated entertaining, making them the perfect centerpiece for any gathering.

Why You Must Make These Exquisite Tartlets
The inspiration for these delightful tartlets stems from a memorable evening spent with dear friends, Katherina and her husband, Bill. Katherina, with her characteristic modesty, often claims to be a kitchen novice, a claim I’ve always found hard to believe given the consistently exquisite dishes she presents. One evening, she served a magnificent tomato and goat cheese tart that left an indelible impression on me. The combination of savory pastry, sweet tomatoes, and tangy cheese was simply sublime. Inspired by her creation, I set out to adapt the recipe, aiming for a smaller, bite-sized appetizer that would be equally impressive but even simpler to prepare for casual entertaining or a sophisticated dinner party.
My version takes Katherina’s brilliant concept and introduces a few thoughtful tweaks. I opted for smaller rounds, transforming them into elegant finger food perfect for mingling. For the cheese, I substituted the goat cheese with the soft, herbaceous delight of Garlic and Fine Herbs Boursin. This switch imparted a unique creamy texture and an aromatic depth that perfectly complements the other ingredients. The result was these incredibly popular Tomato and Boursin Tartlets, an appetizer that truly offers the best of both worlds: gourmet flavor with effortless preparation. If you’re looking for other crowd-pleasing bites, our Homemade Cheese Straws are another fantastic option to explore!
Effortless Elegance for Any Occasion
- Simplicity Redefined: Thanks to the clever use of store-bought puff pastry, these tartlets are surprisingly easy to assemble. Gone are the days of labor-intensive pastry making; simply unroll, cut, and fill! This shortcut means you spend less time in the kitchen and more time enjoying your guests.
- A Symphony of Flavors: Each tartlet is a miniature masterpiece, bursting with layers of deliciousness. The sweet, buttery caramelized onions provide a foundational richness, beautifully contrasted by the creamy, garlic-and-herb infused Boursin cheese. Fresh tomatoes add a burst of acidity and juiciness, while a sprinkle of fresh herbs and Parmesan ties all the flavors together in a perfect savory harmony.
- Visually Stunning and Irresistible: These aren’t your everyday appetizers. Their golden, flaky crusts, vibrant red tomato slices, and delicate herb garnishes make them incredibly appealing to the eye. They possess an undeniable charm that draws people in, and once tasted, they become utterly irresistible. They truly look as good as they taste!

Ingredient Notes for Perfect Tomato & Boursin Tartlets
The success of these Tomato and Boursin Tartlets lies in the quality of their simple yet powerful ingredients. Paying a little attention to your choices can elevate these appetizers from great to truly exceptional.
- Kitchen Staples: You’ll need high-quality Olive Oil for sautéing and brushing, along with essential seasonings like Kosher Salt and freshly ground Black Pepper. These foundational elements enhance every other flavor in the tartlets.
- Puff Pastry: This is your shortcut to gourmet. Always seek out an all-butter brand of puff pastry. The difference in flavor and flakiness is significant. Butter-based pastry creates a superior puff and a richer, more delicate crust when baked, which is crucial for a truly elegant tartlet. Ensure it’s properly defrosted according to package instructions, but kept cold until ready to use.
- Yellow Onion: The heart of the savory base, yellow onions are ideal for caramelizing due to their natural sweetness. When slowly cooked, they transform into a rich, deeply flavorful, and sticky-sweet foundation that pairs perfectly with the creamy Boursin and fresh tomatoes.
- Garlic: Fresh garlic, thinly sliced into slivers, adds an aromatic pungency that complements the caramelized onions beautifully. Avoid pre-minced garlic for the best flavor.
- White Wine: A splash of dry white wine (such as dry Vermouth, Pinot Grigio, or Sauvignon Blanc) adds a layer of acidity and complexity to the caramelized onions, helping to deglaze the pan and intensify their savory notes. I always keep a bottle of dry Vermouth on hand specifically for cooking, storing it in the refrigerator to maintain its freshness.
- Fresh Herbs (Thyme & Basil): Fresh herbs are non-negotiable for these tartlets. Fresh Thyme adds an earthy, peppery note to the caramelized onions, while Fresh Basil, julienned and sprinkled on top, provides a sweet, aromatic finish that brightens the entire dish.
- Grated Parmesan: For the best flavor, look for authentic Parmigiano Reggiano. Its salty, umami-rich profile acts as a perfect barrier to prevent the pastry from becoming soggy and adds a fantastic depth of flavor.
- Garlic and Fine Herbs Boursin Cheese: This is the star creamy component. Boursin cheese is a soft, triple-cream cheese infused with garlic and various fine herbs, offering a velvety texture and an intense burst of flavor that requires no additional seasoning. You’ll typically find it in the specialty cheese section of your grocery store.
- Campari Tomatoes: These are the ideal tomatoes for this recipe. Campari tomatoes are medium-sized, wonderfully round, and known for their deep red color, sweet flavor, and low acidity. Their size is perfect for slicing into ¼-inch rounds that fit neatly onto the tartlets. I often find them at specialty grocery stores like Whole Foods. If you can’t find Campari, look for other small, firm, and flavorful round tomatoes.

How to Make Flawless Tomato & Boursin Tartlets
Creating these Tomato and Boursin Tartlets is a straightforward process, but following these detailed steps will ensure perfectly crisp, flavorful, and beautiful appetizers every time.

- Prepare the Puff Pastry Rounds: On a lightly floured surface, carefully unfold a sheet of defrosted puff pastry. Give it a gentle roll to ensure an even thickness. Using a 2 ¾-inch biscuit cutter, cut as many rounds as possible from the pastry sheet. Transfer these rounds to a parchment-lined baking sheet. Next, take a slightly smaller biscuit cutter (around 2 ½-inches) and gently score a circle inside each pastry round, creating a border without cutting all the way through. This border will help the edges puff up beautifully while keeping the center flat. Using a fork, carefully dock (prick) the center section of each pastry round to prevent it from rising too much. Finally, sprinkle a generous amount of grated Parmesan cheese over the docked center area. This creates a delicious flavor base and acts as a barrier against moisture, preventing a soggy bottom. Refrigerate the prepared pastry rounds while you work on the fillings.
- Craft the Caramelized Onion Mixture: In a skillet, heat a generous tablespoon of olive oil over medium-low heat. Add the thinly sliced yellow onions and garlic slivers. Sauté slowly for 15 to 20 minutes, stirring frequently. Patience is key here; the onions need time to soften and release their sugars, turning golden brown and translucent without burning. The liquid should mostly evaporate. Once caramelized, add ¼ teaspoon of kosher salt, a good grind of fresh black pepper, the dry white wine, and fresh thyme leaves. Continue to cook for another 10 minutes, allowing the wine to reduce and the onions to deepen in flavor and color to a rich, light brown. Remove the skillet from the heat and set aside to cool slightly.

- Assemble the Tartlets: Preheat your oven to 425ºF (220ºC). Retrieve your chilled puff pastry rounds. Divide the caramelized onion mixture evenly among the tartlets, spreading it within the scored border. Next, crumble about 1 to 1 ½ teaspoons of Garlic and Fine Herbs Boursin cheese over the onions on each tartlet. Top each tartlet with a single, thinly sliced Campari tomato. Lightly brush the tomato slices with a little olive oil, and then sprinkle with julienned fresh basil, a pinch of salt, and a grind of fresh black pepper.
- Bake to Golden Perfection: Place the baking sheet with the assembled tartlets into the preheated oven. Bake for 20 to 25 minutes, or until the puff pastry is beautifully golden brown, puffed around the edges, and the fillings are bubbly and fragrant. The tomatoes should be slightly softened and caramelized at the edges. Once baked, carefully remove the tartlets from the oven.
These savory gems are truly a revelation, perfect for adding a touch of gourmet flair to any occasion. Each tartlet is a miniature tower of flavor, meticulously layered to deliver maximum impact. The crisp, buttery puff pastry rounds provide the ideal foundation, yielding to a delectable combination of sweet caramelized onions infused with aromatic thyme, the rich and creamy tang of crumbled Boursin cheese, a juicy slice of fresh tomato, vibrant basil, and a savory hint of Parmesan. The interplay of these ingredients creates an appetizer that is both sophisticated and utterly comforting. Be warned: these are so delicious, you and your guests will be tempted to devour them as quickly as possible!
Frequently Asked Questions About Puff Pastry and Tartlets
The golden rule for achieving a magnificent puff pastry rise is to always bake it when it’s cold and in a very hot oven. The extreme heat causes the water content within the butter layers of the puff pastry to rapidly convert into steam. This steam then forces the individual layers of dough apart, creating those characteristic airy, flaky layers that we all love. If your pastry is too warm, the butter might melt before the steam has a chance to fully expand, resulting in a less dramatic, or even flat, rise. Always preheat your oven thoroughly and ensure your pastry is well-chilled before baking.
Puff pastry is primarily composed of flour and butter. While flour provides some carbohydrates, butter is notably high in saturated fats. Therefore, puff pastry isn’t typically classified as a health food. It does contain a few nutrients from its main ingredients, but it should be enjoyed in moderation as part of a balanced diet. Like many rich, delicious foods, it’s perfectly fine to indulge in puff pastry dishes on occasion, especially for special gatherings. The key is balance and mindful consumption.
Preventing a soggy bottom on your puff pastry tart is a common concern, especially when dealing with moist fillings like tomatoes. The most effective strategy is to create a barrier between the pastry and the wet ingredients. In this recipe, the grated Parmesan cheese serves this exact purpose. Sprinkling it on the docked pastry before adding the onion and tomato helps absorb excess moisture and forms a protective layer, ensuring your puff pastry remains delightfully crisp and flaky. Additionally, ensuring your caramelized onions are cooked until all liquid has evaporated helps immensely.
Caramelized onions are thinly sliced onions that have undergone a slow cooking process in a small amount of fat, typically butter or olive oil, over low heat. This prolonged, gentle heat causes a chemical reaction known as the Maillard reaction, which browns the sugars naturally present in the onions. This process transforms their sharp, pungent flavor into a remarkably sweet, savory, and deeply rich umami taste, accompanied by a beautiful golden-brown color and a soft, jam-like texture. They are an incredible flavor enhancer for many dishes, including these tartlets.
Yes, you can certainly do some prep work in advance to make serving these Tomato and Boursin Tartlets even easier. The caramelized onion mixture can be prepared up to 2-3 days ahead of time and stored in an airtight container in the refrigerator. You can also cut and score the puff pastry rounds and keep them chilled on a baking sheet, covered, for up to 24 hours. However, for the best flaky texture and to prevent sogginess, it’s best to assemble and bake the tartlets just before serving. The tomatoes and Boursin should be added right before baking.
If you happen to have any leftover Tomato and Boursin Tartlets (a rare occurrence!), they can be stored in an airtight container in the refrigerator for up to 2 days. To reheat, place them on a baking sheet in a preheated oven at 350°F (175°C) for about 5-10 minutes, or until warmed through and the pastry re-crisps. Avoid microwaving, as this will make the puff pastry soggy.

You May Also Like: Other Irresistible Appetizers
If you’ve enjoyed the effortless elegance of these Tomato and Boursin Tartlets, you’ll love exploring other appetizers that are perfect for entertaining or simply treating yourself. Here are some of our favorites:
- Warm Savory Dips from Robin of Simply Southern Baking: Perfect for cozy gatherings, these dips are hearty and full of flavor.
- Muenster and Spinach Pinwheels: Another fantastic puff pastry option, these pinwheels are savory and incredibly easy to make.
- Cranberry Baked Meatballs: A delightful blend of sweet and savory, ideal for holiday parties or game days.
- Homemade Queso Dip: Creamy, cheesy, and utterly addictive, this dip is a guaranteed crowd-pleaser.
- Beef Crostini with Blue Cheese Spread: Elevate your appetizer game with these sophisticated and flavorful crostini.
- Blue Cheese Balls: A classic appetizer with a rich, tangy flavor, perfect for cheese lovers.
- Antipasto Skewers: Colorful and customizable, these skewers are a refreshing and easy appetizer option.
- Explore More Appetizer Recipes: Dive into our full collection of delicious bites and finger foods for every occasion.
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Tomato and Boursin Tartlets
20 minutes
45 minutes
1 hour 5 minutes
12 tartlets
These elegant Tomato and Boursin Tartlets offer an exquisite blend of creamy, sweet, and savory flavors, all nestled on a perfectly crisp, buttery puff pastry. They are a deceptively simple yet impressive appetizer, ideal for any gathering or special occasion where you want to impress without the stress!
Ingredients
- 14 ounce package of all-butter puff pastry, defrosted (ensure ‘butter’ is listed in ingredients for best flavor)
- 2-3 tablespoons Olive oil, plus extra for brushing
- 2 cups thinly sliced yellow onions (equivalent to 1 large onion)
- 2 medium-sized garlic cloves, thinly sliced into slivers
- Kosher salt and freshly ground black pepper, to taste
- 1 ½ tablespoons dry white wine (such as dry Vermouth, Pinot Grigio, or Sauvignon Blanc)
- 1 teaspoon fresh thyme leaves, finely chopped
- 2-3 tablespoons freshly grated Parmesan cheese, plus extra for shaving (Parmigiano Reggiano recommended)
- 1 package (approx. 5.2 oz) Garlic and Fine Herbs Boursin cheese
- 4-6 Campari tomatoes, sliced into ¼-inch rounds (look for medium-sized, firm, and flavorful tomatoes)
- 1 ½ tablespoons fresh basil leaves, julienned
Instructions
- Prepare Puff Pastry: Unfold a sheet of defrosted puff pastry on a lightly floured surface. Gently roll it out slightly to ensure even thickness. Using a 2 ¾-inch round biscuit cutter, cut out as many circles as possible from the pastry sheet. Place these rounds onto a parchment-lined baking sheet.
- Score and Dock Pastry: Take a slightly smaller biscuit cutter (approx. 2 ½-inch) and gently press it onto each pastry round to score a border, without cutting all the way through the dough. This creates a frame for the filling. Using the tines of a fork, prick the center portion of each pastry round (inside the scored border) to prevent it from puffing up too much. Sprinkle some grated Parmesan cheese over the docked center of each round. Refrigerate the prepared pastry rounds while you proceed with the filling.
- Preheat Oven: Preheat your oven to 425°F (220°C).
- Caramelize Onions: Heat a generous tablespoon of olive oil in a large skillet over medium-low heat. Add the thinly sliced yellow onions and garlic slivers. Sauté slowly for 15-20 minutes, stirring occasionally, until the onions are very soft, translucent, and have started to turn a light golden brown. Ensure all liquid has evaporated.
- Deglaze and Flavor Onions: Add ¼ teaspoon of kosher salt, a pinch of freshly ground black pepper, the dry white wine, and fresh thyme leaves to the caramelized onions. Continue to cook for another 10 minutes, stirring until the wine has evaporated and the onions are deeply golden brown and intensely flavorful. Remove from heat and let cool slightly.
- Assemble Tartlets: Retrieve the chilled puff pastry rounds from the refrigerator. Divide the cooled caramelized onion mixture evenly among the pastry rounds, spreading it gently within the scored border. Crumble 1 to 1 ½ teaspoons of Garlic and Fine Herbs Boursin cheese over the onions on each tartlet.
- Add Tomatoes and Season: Place a single slice of Campari tomato in the center of each tartlet. Lightly brush the tomato slices with a little olive oil. Sprinkle each tartlet with the julienned fresh basil, a tiny pinch of salt, and a grind of fresh black pepper.
- Bake Tartlets: Transfer the baking sheet to the preheated oven. Bake for 20 to 25 minutes, or until the puff pastry is golden brown and beautifully puffed around the edges, and the filling is bubbly.
- Serve: Carefully remove the tartlets from the oven. Serve them hot or warm to enjoy their best flaky texture and vibrant flavors.
Notes
Adapted from a recipe by the wonderful Ina Garten, this version adds a personal touch with the Boursin cheese and specific preparation tips for home cooks.
Recommended Products
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- Biscuit Cutters
- Reynolds Kitchens Non-Stick Baking Parchment Paper Sheets – 12×16 Inch, 22 Count
- USA Pan Bakeware Half Sheet Pan, Warp Resistant Nonstick Baking Pan, Made in the USA from Aluminized Steel – 1050HS
Nutrition Information:
Yield:
12
Serving Size:
1
Amount Per Serving:
Calories: 233Total Fat: 15gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 12gCholesterol: 3mgSodium: 145mgCarbohydrates: 21gFiber: 1gSugar: 2gProtein: 4g
Thatskinnychickcanbake.com occasionally offers nutritional information for recipes contained on this site. This information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although thatskinnychickcanbake.com attempts to provide accurate nutritional information, these figures are only estimates.
Varying factors such as product types or brands purchased can change the nutritional information in any given recipe. Also, many recipes on thatskinnychickcanbake.com recommend toppings, which may or may not be listed as optional and nutritional information for these added toppings is not listed. Other factors may change the nutritional information such as when the salt amount is listed “to taste,” it is not calculated into the recipe as the amount will vary. Also, different online calculators can provide different results.
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