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This post is all about Caramelized Onion and Gruyère Tart Squares.
These caramelized onion and Gruyère tart squares are a delicious appetizer or snack featuring a flaky pastry base topped with sweet golden onions and rich Gruyère cheese. Perfect for gatherings or as a savory treat any time.
The recipe is simple to follow and makes use of basic cooking techniques allowing you to impress your guests with minimal effort.
Deliciously Savory Tart Squares
The caramelized onion and Gruyère tart squares are a delightful treat that combines the sweetness of slowly cooked onions with the rich flavor of Gruyère cheese.
These squares are perfect for serving at gatherings or enjoying as a savory snack at any time.
The flaky pastry base provides a wonderful contrast to the tender, caramelized onions, making each bite a satisfying experience.
Perfectly Caramelized Onions
Caramelizing onions is a simple yet rewarding process that transforms their sharpness into a sweet, rich flavor.
Cooking them slowly over medium heat allows the natural sugars to develop, resulting in a beautiful golden color and a melt-in-your-mouth texture.
Adding fresh thyme towards the end of the cooking process enhances the overall flavor profile, bringing a hint of earthiness to the dish.
Flaky Pastry Base
The pastry used for these tart squares is a key element that elevates the dish.
Using puff pastry ensures a light and flaky texture that contrasts beautifully with the creamy filling.
When baked, the pastry puffs up, creating a delightful crunch that complements the softness of the onions and cheese.
Assembly and Baking
Assembling the tart is straightforward.
Once the onions are caramelized, they are spread evenly over the rolled-out pastry, followed by a generous sprinkle of grated Gruyère cheese.
This layering technique ensures that every square is packed with flavor, making them irresistible.
Serving Suggestions
These tart squares can be served warm or at room temperature, making them versatile for any occasion.
Garnishing with fresh thyme sprigs not only adds a pop of color but also enhances the aromatic experience.
Pair them with a light salad or serve them alongside a selection of dips for a delightful appetizer spread.
Nutritional Information
Each square contains approximately 180 calories, making them a satisfying yet manageable indulgence.
With a balance of carbohydrates, fats, and protein, these tart squares can fit into a variety of dietary preferences.
Enjoying them in moderation allows you to savor their rich flavors without guilt.
Savory Caramelized Onion and Gruyère Tart Squares
This tart features a buttery pastry crust filled with slowly caramelized onions and melted Gruyère cheese, creating a perfect balance of flavors. The recipe takes about 1 hour from start to finish and yields approximately 16 squares.
Ingredients
- 1 sheet of puff pastry, thawed
- 3 large onions, thinly sliced
- 2 tablespoons olive oil
- 1 tablespoon butter
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
- 1 cup grated Gruyère cheese
- 1 egg, beaten (for egg wash)
Instructions
- Preheat the Oven: Preheat your oven to 400°F (200°C).
- Caramelize the Onions: In a large skillet, heat olive oil and butter over medium heat. Add the sliced onions, salt, and pepper. Cook, stirring occasionally, for about 25-30 minutes until the onions are golden brown and caramelized. Stir in thyme during the last few minutes of cooking.
- Prepare the Pastry: Roll out the puff pastry on a lightly floured surface to fit a greased baking dish (approximately 9×13 inches). Transfer the pastry to the dish and press it into the corners.
- Assemble the Tart: Spread the caramelized onions evenly over the pastry, then sprinkle the grated Gruyère cheese on top.
- Bake: Brush the edges of the pastry with the beaten egg. Bake in the preheated oven for 25-30 minutes, or until the pastry is golden and puffed.
- Cool and Cut: Allow the tart to cool slightly before cutting it into squares. Serve warm or at room temperature.
Cook and Prep Times
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Servings: 16 squares
- Calories: 180kcal
- Fat: 12g
- Protein: 4g
- Carbohydrates: 14g
