Description
A savory caramelized onion tart with a flaky crust and rich, sweet onion filling.
Ingredients
Scale
- 2 large onions, thinly sliced
- 2 tbsp butter
- 1 tbsp olive oil
- 1 tsp sugar
- 1 tsp salt
- 1 pre-made pie crust
- 1/2 cup grated Gruyère cheese
- 1 egg, beaten
- 1/4 tsp black pepper
Instructions
- Preheat oven to 375°F (190°C).
- Heat butter and olive oil in a pan over medium heat.
- Add onions, sugar, and salt. Cook for 20-25 minutes until caramelized.
- Roll out the pie crust and place it in a tart pan.
- Spread caramelized onions evenly over the crust.
- Sprinkle cheese on top.
- Brush edges of crust with beaten egg.
- Bake for 25-30 minutes until golden brown.
- Let cool slightly before serving.
Notes
- Use a mandoline for even onion slices.
- Store leftovers in an airtight container for up to 2 days.
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Category: Appetizer
- Method: Baking
- Cuisine: French
Nutrition
- Serving Size: 1 slice
- Calories: 250
- Sugar: 5g
- Sodium: 400mg
- Fat: 15g
- Saturated Fat: 7g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 22g
- Fiber: 2g
- Protein: 6g
- Cholesterol: 45mg