Why You’ll Love This Recipe
Caramelized Onion and Gruyère Tart is an elegant and delicious dish that combines the richness of Gruyère cheese with the sweet, savory flavors of caramelized onions. The buttery, flaky puff pastry serves as the perfect base, making this tart not only a beautiful centerpiece for your Easter gathering but also an irresistible treat for your taste buds. This easy-to-make dish is packed with flavor and texture, creating a balance of sweetness, nuttiness, and a touch of herby freshness from thyme.
Ingredients
(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)
- 1 sheet puff pastry, thawed
- 2 large onions, thinly sliced
- 2 tablespoons olive oil
- 1 tablespoon butter
- 1 cup Gruyère cheese, grated
- 1 tablespoon fresh thyme leaves
- Salt and pepper to taste
- 1 egg, beaten (for egg wash)
Directions
- Preheat your oven to 400°F (200°C).
- In a skillet, heat the olive oil and butter over medium heat. Add the sliced onions and cook, stirring occasionally, for about 20-25 minutes, or until the onions are caramelized and golden brown. Season with salt, pepper, and fresh thyme leaves.
- Roll out the puff pastry on a floured surface to fit a tart pan. Gently transfer the pastry to the pan and prick the bottom with a fork to prevent puffing.
- Spread the caramelized onions evenly over the pastry base, then sprinkle with the grated Gruyère cheese.
- Brush the edges of the puff pastry with the beaten egg to create a golden finish.
- Bake for 25-30 minutes, or until the pastry is golden and the cheese is bubbling.
- Allow the tart to cool slightly before slicing and serving.
Servings and Timing
- Servings: 6
- Prep time: 15 minutes
- Cook time: 30 minutes
- Total time: 45 minutes
Variations
- Herb Variation: Add fresh rosemary or oregano to the caramelized onions for a different herby flavor.
- Cheese Substitute: If you can’t find Gruyère, try using Swiss cheese or aged cheddar for a different but equally rich flavor.
- Add Protein: For a heartier version, add cooked chicken or bacon on top of the onions before adding the cheese.
Storage/Reheating
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, warm the tart in the oven at 350°F (175°C) for 5-10 minutes, until heated through and the pastry is crisp again.
FAQs
Can I make this tart ahead of time?
Yes, you can prepare the tart up to the baking stage, cover it, and store it in the refrigerator for up to 24 hours before baking.
Can I freeze this tart?
Yes, you can freeze the unbaked tart. Wrap it tightly and store it in the freezer for up to 1 month. When ready to bake, bake directly from frozen, adding a few extra minutes to the cooking time.
Can I use a different type of cheese?
Gruyère is the classic choice for this tart, but you can substitute it with cheeses like Emmental, cheddar, or Brie for a different flavor.
How do I prevent the puff pastry from getting soggy?
Make sure to prick the bottom of the pastry before baking, and use a generous amount of caramelized onions without over-wetting them. Baking the tart on the lower rack of the oven can also help with crispness.
Can I add other vegetables to this tart?
Yes, roasted vegetables like bell peppers or zucchini would be delicious added to the caramelized onions.
Conclusion
This Caramelized Onion and Gruyère Tart is the perfect addition to your Easter spread or any special occasion. The sweet onions and nutty Gruyère cheese create a delightful combination, and the crispy puff pastry makes every bite irresistible. Easy to prepare and impressive to serve, this tart will definitely be a showstopper on your table.
Print
Caramelized Onion and Gruyère Tart
- Total Time: 45 minutes
- Yield: 6 servings
- Diet: Vegetarian
Description
This Caramelized Onion and Gruyère Tart is a flavorful and elegant dish that combines sweet, savory caramelized onions with the nutty richness of Gruyère cheese, all on a buttery, flaky puff pastry. Perfect for Easter, brunch, or any special occasion, this tart is a delicious and visually stunning centerpiece that is sure to impress.
Ingredients
- 1 sheet puff pastry (thawed)
- 2 large onions, thinly sliced
- 2 tablespoons olive oil
- 1 tablespoon butter
- 1 cup Gruyère cheese, grated
- 1 tablespoon fresh thyme leaves
- Salt and pepper to taste
- 1 egg (beaten, for egg wash)
Instructions
- Preheat your oven to 400°F (200°C).
- In a skillet, heat olive oil and butter over medium heat. Add sliced onions and cook for 20-25 minutes, stirring occasionally, until caramelized and golden brown. Season with salt, pepper, and thyme.
- Roll out the puff pastry on a floured surface to fit your tart pan. Transfer the pastry to the pan and prick the bottom with a fork to prevent puffing.
- Spread the caramelized onions evenly over the pastry, then sprinkle with grated Gruyère cheese.
- Brush the edges of the puff pastry with the beaten egg to create a golden finish.
- Bake for 25-30 minutes, or until the pastry is golden and the cheese is bubbling.
- Let the tart cool slightly before slicing and serving.
Notes
- Herb Variation: Add fresh rosemary or oregano to the onions for a unique herby flavor.
- Cheese Swap: If Gruyère isn’t available, use Swiss cheese or aged cheddar for a rich alternative
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Appetizer, Brunch, Main Dish
- Method: Baking
- Cuisine: French
