Description
Indulge in the delightful flavors of this French Onion Mushroom Tart, a perfect dish for any occasion. This savory tart features a flaky puff pastry base topped with sweet caramelized onions and rich sautéed mushrooms, all finished off with a blend of melty cheeses. Its impressive appearance and mouthwatering taste make it an ideal choice for brunch gatherings, elegant dinner parties, or cozy nights in. Easy to prepare yet sophisticated enough to impress your guests, this tart is sure to become a favorite in your culinary repertoire.
Ingredients
Scale
- 1 sheet puff pastry, thawed
- 2 large onions, thinly sliced
- 1 1/2 cups mushrooms, sliced (cremini, shiitake, or button mushrooms work well)
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 1 teaspoon sugar
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/2 teaspoon fresh thyme leaves (optional)
- 1/2 cup Gruyère cheese, grated
- 1/4 cup Parmesan cheese, grated
- 1 egg, beaten (for egg wash)
Instructions
- Caramelize the onions: Heat butter and olive oil in a skillet over medium-low heat. Add thinly sliced onions and cook for about 30 minutes until golden brown. Stir in sugar, salt, and pepper halfway through.
- Sauté the mushrooms: In the same skillet, increase heat and add mushrooms. Cook until browned and liquid evaporates, about 10 minutes.
- Prepare the puff pastry: Preheat oven to 400°F (200°C). Roll out puff pastry to fit your baking sheet and score a 1-inch border around the edges.
- Assemble the tart: Spread caramelized onions on the pastry base, top with sautéed mushrooms, and sprinkle with cheeses. Brush edges with beaten egg.
- Bake: Place in the oven for 20-25 minutes until golden brown and puffed.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Appetizer/Main
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 slice (100g)
- Calories: 295
- Sugar: 4g
- Sodium: 450mg
- Fat: 18g
- Saturated Fat: 10g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 2g
- Protein: 8g
- Cholesterol: 50mg