Caramelized Onion and Gruyère Cheese Tart
A sophisticated savory tart featuring slow-cooked caramelized onions and melted Gruyère cheese in a buttery shortcrust pastry.
- Prep Time: 30 minutes
- Cook Time: 60 minutes
- Total Time: 1 hour 30 minutes
- Yield: 8 servings 1x
- Category: Appetizer
- Method: Baking
- Cuisine: French
Ingredients
Scale
- 3 large yellow onions, thinly sliced
- 4 tablespoons unsalted butter
- 1 sheet shortcrust pastry (chilled)
- 2 cups shredded Gruyère cheese
- 1/4 cup heavy cream
- 1 tablespoon fresh thyme leaves
- Salt and black pepper to taste
- 1 tablespoon olive oil
Instructions
- Preheat oven to 375°F (190°C).
- Melt butter and oil in a skillet over medium-low heat and sauté sliced onions for 30-40 minutes until deep golden brown.
- Stir in salt, pepper, and a splash of water to deglaze the pan, then remove from heat.
- Roll out pastry and press into a tart tin. Prick the bottom with a fork.
- Line with parchment and weights, then blind bake for 12 minutes. Remove weights.
- Spread caramelized onions over the base and top with shredded Gruyère cheese.
- Drizzle heavy cream and thyme over the cheese layer.
- Bake for 20-25 minutes until the cheese is bubbly and the crust is golden brown.