Description
Indulge in the rich and savory flavors of this Caramelized Onion and Gruyère Tart. The buttery puff pastry serves as a perfect base for the sweet caramelized onions and gooey Gruyère cheese, creating a deliciously satisfying dish.
Ingredients
Puff Pastry:
1 sheet puff pastry, thawed;
Caramelized Onions:
2 tablespoons olive oil; 2 large yellow onions, thinly sliced; 1 teaspoon sugar; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried); 1 teaspoon balsamic vinegar; 1 cup shredded Gruyère cheese; 1 egg, beaten (for egg wash); all-purpose flour, for dusting
Instructions
- Prepare the Pastry: Preheat the oven to 400°F (200°C). Lightly flour a clean surface and roll out the puff pastry to fit a 9×13-inch baking sheet or tart pan.
- Caramelize the Onions: Heat olive oil in a large skillet over medium heat. Add the sliced onions, salt, pepper, and sugar. Cook slowly until deeply golden and caramelized. Stir in thyme and balsamic vinegar.
- Assemble and Bake: Spread the caramelized onions on the pastry, top with Gruyère, and brush the border with egg. Bake until golden and bubbly.
- Serve: Let the tart cool before slicing. Serve warm or at room temperature.
Notes
- This tart is versatile and pairs well with salads for a light meal.
- Feel free to swap Gruyère with Swiss or Emmental cheese for a different flavor profile.
Nutrition
- Serving Size: 1 slice
- Calories: 320
- Sugar: 4g
- Sodium: 310mg
- Fat: 22g
- Saturated Fat: 9g
- Unsaturated Fat: 11g
- Trans Fat: 0g
- Carbohydrates: 22g
- Fiber: 2g
- Protein: 7g
- Cholesterol: 45mg
