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French Onion Mushroom Tart

French Onion Mushroom Tart
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Indulge in the delightful flavors of a French Onion Mushroom Tart, where sweet caramelized onions meet earthy mushrooms, all enveloped in a golden, flaky puff pastry. This savory dish is perfect for any occasion—be it a brunch gathering or an elegant dinner. With its impressive presentation and rich taste, it’s sure to become a favorite among family and friends. Plus, it’s surprisingly easy to prepare, making it accessible for cooks of all skill levels. Explore the versatility of this tart by serving it as an appetizer, side dish, or part of a cozy meal.

Ingredients

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  • 1 sheet puff pastry (thawed)
  • 2 large onions (thinly sliced)
  • 1 ½ cups mushrooms (sliced)
  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 1 teaspoon sugar
  • Salt and black pepper to taste
  • Fresh thyme leaves (optional)
  • ½ cup Gruyère cheese (grated)
  • ¼ cup Parmesan cheese (grated)
  • 1 egg (beaten for egg wash)

Instructions

  1. Preheat your oven to 400°F (200°C).
  2. In a large skillet over medium-low heat, melt butter with olive oil. Add sliced onions and cook gently for about 30 minutes until caramelized.
  3. Increase heat to medium, add mushrooms to the same skillet, and sauté until golden brown and liquid has evaporated.
  4. Roll out the puff pastry on a floured surface into a rectangle that fits your baking sheet. Place on parchment-lined baking sheet and score a 1-inch border around the edges.
  5. Spread caramelized onions within the scored border, top with sautéed mushrooms and cheeses, then brush edges with beaten egg.
  6. Bake for 20-25 minutes until golden brown. Allow cooling slightly before slicing.

Nutrition

Find it online: https://myrecipesbook.com/french-onion-mushroom-tart/

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