Caramelized Onion and Gruyère Tart
A delightful savory tart featuring the sweet richness of caramelized onions and nutty Gruyère cheese, perfect for any occasion.
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Total Time: 60 minutes
- Yield: 6-8 servings
- Category: Main Course
- Method: Baking
- Cuisine: French
- Diet: Vegetarian
Ingredients
- 1 sheet of puff pastry (thawed, if frozen)
- 2 large onions (thinly sliced)
- 2 tablespoons olive oil
- 1 teaspoon salt
- 1 teaspoon sugar
- 1 teaspoon fresh thyme leaves (or ½ teaspoon dried thyme)
- 1 cup grated Gruyère cheese
- 2 large eggs
- ½ cup heavy cream
Instructions
- Preheat your oven to 400°F (200°C).
- Heat olive oil in a large skillet over medium heat. Add the sliced onions, salt, and sugar. Cook, stirring occasionally, for about 20-25 minutes, until the onions are golden brown and caramelized.
- Mix in the thyme leaves and cook for another minute. Remove the skillet from heat and let the onions cool slightly.
- In a medium bowl, whisk together the eggs and heavy cream. Stir in the caramelized onions and grated Gruyère cheese until well combined.
- Roll out the puff pastry on a lightly floured surface to fit your tart pan or a baking sheet. Press it into the bottom and up the sides of the pan.
- Pour the onion and cheese mixture into the crust and spread it evenly.
- Bake in the preheated oven for about 25-30 minutes, or until the tart is golden brown and puffed.
- Allow the tart to cool for a few minutes before slicing. Serve warm or at room temperature.
Notes
For a perfect tart, ensure your onions are well caramelized and the crust is pre-baked to prevent sogginess.