Upside Down Onion Tart With Brie
User Reviews
5
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Prep Time
15 mins
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Cook Time
15 mins
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Total Time
30 mins
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Servings
8 tarts
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Calories
349 kcal
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Cuisine
Mediterranean, American
Upside Down Onion Tart With Brie
Description
Upside Down Onion Tart With Brie starts with thawed puff pastry cut into squares to cover individual servings. A drizzle of olive oil and balsamic glaze creates flavorful puddles on the baking sheet topped with onion slices and fragrant thyme leaves. These layers are seasoned with salt and pepper before a slice of Brie is added to each.
Once fully assembled and covered with pastry, the tart is brushed with egg wash for a shiny, crisp crust. It then bakes at 400°F until the puff pastry is golden brown and the Brie is melted inside, melding the savory sweetness of caramelized onions with the creamy cheese texture.
The tart serves well as a warm appetizer or snack. Letting it cool briefly before removing from parchment helps maintain its shape. Store leftovers chilled and reheat in the oven or air fryer to restore crispness.
Ensuring parchment is flat under the oil and glaze prevents dripping. The tart keeps refrigerated for a few days, although it is best fresh to enjoy the optimal texture of the puff pastry.
Ingredients
- 1 .3 oz package puff pastry 2 sheets, 490 g
- 4 Tbsp olive oil 60 mL
- 4 Tbsp balsamic glaze 60 mL
- 8 prigs thyme fresh
- 8 pinches salt
- 8 pinches black pepper
- 2 medium onion peeled and thinly sliced
- 1 wheel Brie cheese cut into 8 triangles
- 1 large egg
Instructions
- Prep: If frozen, let the puff pastry thaw on the counter until soft and pliable. Once thawed, cut into 8 equal squares. Preheat the oven to 400°F (204°C). Slice the onion and remove the thyme leaves from their stems.
- Layer: Line a large baking sheet with parchment paper. Drizzle oil equally around the baking sheet to make 8 little puddles. Drizzle on balsamic. Top each with an onion slice. Sprinkle on thyme leaves, salt, and pepper. Top with a slice of brie.
- Cover: Top each mound with the puff pastry, pressing the edges down to completely cover the cheese and onion. Whisk the egg together, then brush it over the pastry.
- Bake: Bake on the middle rack for 15 minutes until golden brown and cooked through. Let cool on the baking sheet for a few minutes before trying to remove from the parchment.
Notes
- Flatten parchment paper completely before adding oil and balsamic glaze to avoid spills during baking.
- Store cooled tarts in an airtight container in the refrigerator for 2-3 days.
- Reheat in the oven or air fryer to refresh the crispness of the puff pastry.
- For best texture, consume the tarts fresh after baking.
Nutrition Information
Show DetailsNutrition Facts
Serving: 8tarts
Amount Per Serving
Calories 349 kcal
% Daily Value*
| Serving | 1onion tart | |
| Calories | 349kcal | 17% |
| Carbohydrates | 18g | 6% |
| Protein | 7.3g | 15% |
| Fat | 27.5g | 42% |
| Saturated Fat | 8g | 40% |
| Cholesterol | 43mg | 14% |
| Sodium | 492mg | 21% |
| Potassium | 74mg | 2% |
| Fiber | 1.4g | 6% |
| Sugar | 3g | 6% |
| Calcium | 132mg | 13% |
| Iron | 3mg | 17% |
* Percent Daily Values are based on a 2,000 calorie diet.
User Reviews
Overall Rating
5
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