Caramelized Onion and Goat Cheese Tarts

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These tarts feature a flaky puff pastry base crowned with slowly caramelized onions that bring out a deep, sweet richness. The onions are cooked with a touch of sugar, butter, and balsamic vinegar to develop a rich, jammy texture, then layered with crumbled goat cheese and fresh thyme for a balanced, tangy finish. Baking until golden and puffed ensures a crisp, buttery crust that complements the savory toppings beautifully. They are perfect for sharing as appetizers or enjoying alongside a glass of wine, combining simple ingredients for a delightful flavor experience.

Barbara Chef
Updated on Thu, 27 Nov 2025 15:13:07 GMT
A pastry with cheese and onions on top. Pin it
A pastry with cheese and onions on top. | gracefulflavors.com

These caramelized onion and goat cheese tarts bring together sweet and savory flavors wrapped in a perfectly flaky puff pastry. They are ideal for serving as an elegant appetizer or enjoying as a simple treat alongside a glass of wine. The combination of slowly caramelized onions and tangy goat cheese creates a rich and satisfying bite that’s hard to resist.

I first made these tarts for a small gathering, and everyone asked for seconds. They have since become my go-to when I want something quick yet impressive on the table.

Ingredients

  • Puff pastry sheet: provides a light and flaky base, ensure it is thawed properly before use
  • Large onions: thinly sliced for even caramelization and sweetness development
  • Olive oil: adds a fruity depth to the onions, use extra virgin for best flavor
  • Butter: enriches the caramelization process, use unsalted to control seasoning
  • Sugar: helps speed up onion caramelization and enhances sweetness
  • Balsamic vinegar: adds a subtle tang and depth, look for a good quality aged balsamic
  • Goat cheese: crumbled for creamy tang, choose fresh and soft for better melting
  • Fresh thyme leaves: bring an herbal brightness that complements the onions and cheese
  • Salt and pepper: essential for seasoning and balancing flavors

Step-by-Step Instructions

Caramelize the Onions:
Heat olive oil and butter over medium heat in a large pan. Add the sliced onions along with sugar, salt, and pepper. Stir occasionally but allow the onions to cook undisturbed for about 5 minutes between stirs to promote browning. Continue cooking for 15 minutes until they turn a rich golden brown and become jammy in texture. Stir in balsamic vinegar and thyme leaves, then cook for another 5 minutes to let the flavors meld beautifully.
Assemble the Tarts:
Roll out the puff pastry sheet on a lightly floured surface and cut into six equal rectangles. Place the pieces on a baking sheet lined with parchment paper. Spread a generous layer of caramelized onions on each piece, leaving a small border around the edges. Crumble goat cheese evenly on top of the onions and sprinkle additional thyme leaves for extra fragrance.
Bake to Perfection:
Preheat your oven to 400 degrees Fahrenheit. Bake the assembled tarts for 15 to 20 minutes until the puff pastry is golden brown, puffed, and crisp around the edges. Remove from the oven and let cool slightly before serving to allow the cheese to set just a bit.
A slice of pizza with cheese and onions. Pin it
A slice of pizza with cheese and onions. | gracefulflavors.com

Storage Tips

Store cooled tarts in an airtight container in the refrigerator. To reheat and revive the pastry’s crispness, pop them in a preheated oven at 350 degrees Fahrenheit for 8 to 10 minutes until warm. Avoid microwaving as it can make the pastry soggy.

Ingredient Substitutions

If you don’t have goat cheese, a soft cheese like ricotta or feta can be tasty alternatives. Feel free to swap thyme for rosemary or sage for a different aromatic profile. For a vegan option, try a plant-based puff pastry and substitute goat cheese with a cashew-based spread.

Serving Suggestions

These tarts pair wonderfully with a simple green salad dressed lightly with lemon and olive oil. They also make an elegant starter alongside a glass of chilled white wine or a light red such as Pinot Noir. Leftover tarts can be chopped into smaller bites for cocktail parties.

Cultural Context

Caramelized onions have a rich tradition in French cooking and pair beautifully with goat cheese, which is also a staple of Mediterranean cuisine. Puff pastry itself is a classic French technique that creates light, buttery layers, making this recipe a lovely nod to European culinary influences that celebrate simplicity and flavor.

A pastry with blue cheese and onions on top. Pin it
A pastry with blue cheese and onions on top. | gracefulflavors.com

Frequently Asked Questions

→ How do I achieve perfectly caramelized onions?

Cook thinly sliced onions slowly over medium heat with butter and oil, stirring occasionally until they turn golden and develop a jammy texture. Adding a bit of sugar helps with caramelization.

→ Can I prepare the tarts in advance?

Yes, you can assemble the tarts ahead of time and chill them before baking. This helps maintain a flaky pastry and enhances layers.

→ What type of cheese works best with caramelized onions?

Soft, tangy cheeses like goat cheese complement the sweetness of the onions, adding a creamy contrast that balances flavors well.

→ How to prevent soggy pastry bottoms?

Ensure caramelized onions are well-drained or patted dry before spreading on the pastry. Also, chilling the assembled tart before baking can help keep the crust crisp.

→ Is balsamic vinegar necessary in caramelizing onions?

While not essential, balsamic vinegar adds a subtle acidity and depth of flavor that heightens the overall taste of the onion topping.

Caramelized Onion Goat Cheese

Flaky puff pastry topped with onion jam and goat cheese, ideal for savory bites or wine accompaniment.

Prep Time
20 Minutes
Cook Time
20 Minutes
Total Time
40 Minutes
By: Barbara

Category: Hearty Mains

Difficulty: Easy

Cuisine: French

Yield: 6 Servings (6 individual tarts)

Dietary: Vegetarian

Ingredients

→ Pastry

01 1 sheet puff pastry (approx. 9x9 inches)

→ Onion Filling

02 2 large onions, thinly sliced
03 2 tablespoons olive oil
04 1 tablespoon unsalted butter
05 1 teaspoon granulated sugar
06 1 teaspoon balsamic vinegar
07 1 teaspoon fresh thyme leaves
08 Salt and freshly ground black pepper, to taste

→ Cheese

09 4 ounces goat cheese, crumbled

Instructions

Step 01

Heat olive oil and butter in a large skillet over medium heat. Add sliced onions, sugar, salt, and pepper. Cook, stirring occasionally, allowing 5 minutes between stirs to develop color. After 15 minutes, stir in balsamic vinegar and thyme, then continue cooking for an additional 5 minutes until onions are jammy and deeply caramelized.

Step 02

Roll out the puff pastry sheet on a lightly floured surface and cut into six equal rectangles. Place on a baking sheet lined with parchment paper.

Step 03

Evenly distribute the caramelized onions over each pastry rectangle, leaving a 1/2-inch border around the edges. Generously crumble goat cheese atop the onions and sprinkle with additional fresh thyme leaves.

Step 04

Preheat the oven to 400°F (204°C). Bake the tarts on the middle rack for 15 to 20 minutes, or until the pastry is puffed and golden brown.

Notes

  1. Pat the caramelized onions dry with paper towels to prevent soggy pastry bottoms.
  2. Chilling the assembled tarts for 10 minutes before baking enhances puff pastry flakiness.
  3. Fresh thyme imparts the best aromatic flavor compared to dried.

Tools You'll Need

  • Large nonstick skillet
  • Baking sheet
  • Parchment paper
  • Rolling pin

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy and gluten

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 220
  • Total Fat: 12 g
  • Total Carbohydrate: 20 g
  • Protein: 8 g