Description
Indulge in the rich flavors of this Caramelized Onion and Gruyère Tart, a perfect combination of sweet onions and savory cheese on a flaky puff pastry crust.
Ingredients
Scale
Puff Pastry:
- 1 sheet puff pastry (thawed)
Caramelized Onions:
- 2 tablespoons olive oil
- 2 tablespoons unsalted butter
- 3 large yellow onions (thinly sliced)
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
- 1 teaspoon balsamic vinegar
Additional Ingredients:
- 1 1/2 cups grated Gruyère cheese
- 1 egg (beaten, for egg wash)
Instructions
- Preheat the oven: Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
- Caramelize the onions: In a skillet, cook the onions with olive oil, butter, salt, and pepper until golden. Add thyme and balsamic vinegar, then cool slightly.
- Prepare the pastry: Roll out the puff pastry, score a border, brush with egg wash, and add the caramelized onions and Gruyère.
- Bake: Bake for 20–25 minutes until golden and puffed. Slice and serve.
Notes
- This tart is delicious warm or at room temperature.
- For variety, consider adding bacon or mushrooms.
- Enjoy as an appetizer or light lunch with a salad.
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Category: Appetizer, Main Course
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 slice
- Calories: 320
- Sugar: 4g
- Sodium: 290mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 21g
- Fiber: 1g
- Protein: 9g
- Cholesterol: 50mg
