Onion and Gruyere Tart

Ingredients

Fresh thyme leaves

1 tablespoon, finely chopped

Salt

to taste

Pepper

to taste

Heavy cream

1/2 cup

Eggs

2, large

Gruyere cheese

1 cup, grated

Olive oil

2 tablespoons

Onions

2 large, thinly sliced

Frozen puff pastry

1 sheet, thawed

Instructions

1. Preheat the oven to 400°F (200°C).
2. On a lightly floured surface, roll out the thawed puff pastry sheet to fit your baking sheet. Transfer the rolled-out pastry to the baking sheet.
3. Heat the olive oil in a large skillet over medium heat. Add the thinly sliced onions and cook, stirring occasionally, until they are caramelized and golden brown, about 15 minutes. Season with salt and pepper to taste.
4. Evenly spread the caramelized onions over the puff pastry, leaving a small border around the edges to allow for puffing during baking.
5. Sprinkle the grated Gruyere cheese over the caramelized onions.
6. In a small bowl, whisk together the eggs, heavy cream, salt, pepper, and finely chopped thyme leaves until well blended. Pour this mixture evenly over the onions and cheese on the puff pastry.
7. Bake in the preheated oven for 20-25 minutes, or until the tart is golden brown, the filling is set, and the cheese is bubbling.
8. Remove the tart from the oven and let it cool for a few minutes before slicing and serving. Enjoy this savory delight warm from the oven for the best flavor.