CARAMELIZED ONION AND GRUYÈRE TART
Caramelized Onion and Gruyère Tart is a savory, flaky tart topped with sweet caramelized onions and rich melted cheese. Perfect for brunch or a light dinner.
Ingredients
For the Filling:
- 2 tablespoons unsalted butter
- 3 large onions thinly sliced
- ½ teaspoon salt
- ¼ teaspoon black pepper
- 1 teaspoon fresh thyme or ½ teaspoon dried
- 1 teaspoon sugar optional, for caramelizing
- 1 cup gruyère cheese shredded
For the Crust:
- 1 sheet puff pastry thawed
- 1 egg egg beaten for egg wash
Instructions
Caramelize Onions:
- In a skillet, melt butter over medium-low heat. Add sliced onions and cook slowly, stirring occasionally.
- Season with salt, pepper, and thyme. Add sugar if desired. Cook for 25-30 minutes until onions are soft and golden brown.
Prepare Tart:
- Preheat oven to 400°F (200°C). Roll out puff pastry onto a baking sheet.
- Score a 1-inch border around the edges without cutting through. Prick the center with a fork.
Assemble:
- Spread caramelized onions evenly over the pastry, staying within the border.
- Sprinkle shredded Gruyère cheese on top.
- Brush edges with beaten egg.
Bake:
- Bake for 20-25 minutes until pastry is golden and cheese is melted.
- Let cool slightly before slicing and serving.
Notes
- Tip: Cook onions low and slow for best caramelization.
- Make Ahead: Onions can be prepared a day in advance.
- Serving: Great for brunch, lunch, or light dinner.
- Storage: Store leftovers in the refrigerator up to 2 days.