Caramelized Onion and Cheese Tarts
Delightful tarts that combine sweet caramelized onions with creamy cheeses in a flaky crust, perfect for appetizers or snacks.
Ingredients
For the Caramelized Onions
- 3 large yellow onions Best for caramelization, bringing sweetness.
- 2 tablespoons olive oil Good quality extra virgin helps prevent burning.
- 1 tablespoon butter (unsalted) Adds richness and aids in browning.
- 1 teaspoon granulated sugar Enhances the natural sweetness of the onions.
- 1/2 teaspoon balsamic vinegar Adds acidity and depth.
- 1/2 teaspoon dried thyme Offers an earthy note that pairs well with onion.
- to taste salt and freshly ground black pepper Essential for flavor.
For the Cheese Filling
- 8 ounces cream cheese (softened) Ensure it's at room temperature.
- 4 ounces Gruyère cheese (grated) Alternatives include Swiss or cheddar.
- 2 ounces Parmesan cheese (grated) Freshly grated gives best flavor.
- 1 large egg Binds the cheese filling.
- 1/4 cup heavy cream or crème fraîche Adds creaminess; crème fraîche brings tangy flavor.
- a pinch nutmeg (optional) Enhances flavor; use sparingly.
For the Crust and Garnish
- 1 box (14.1 ounces) refrigerated pie crusts Convenient, or use homemade or puff pastry.
- to taste fresh thyme sprigs For garnish.
- to drizzle balsamic glaze For a sweet and tangy touch.
Instructions
Preparation
- Slice the yellow onions into thin strips.
- Heat the olive oil and butter in a large skillet over medium heat until the butter melts.
- Add the onions to the skillet and stir to coat them in the oil and butter.
- Sprinkle in the sugar, balsamic vinegar, thyme, salt, and black pepper.
- Cook the onions slowly, stirring occasionally, for about 25-30 minutes until they are deep golden brown and caramelized.
- Once the onions are done, remove the skillet from heat and let them cool slightly.
Filling Preparation
- In a mixing bowl, combine the softened cream cheese, grated Gruyère, grated Parmesan cheese, egg, heavy cream, and a pinch of nutmeg. Mix until smooth.
- Add the caramelized onions to the cheese mixture and fold gently to combine.
Baking
- Preheat the oven to 375°F (190°C).
- Roll out the pie crust and fit it into tart pans or a baking dish.
- Pour the onion and cheese mixture into the crust, spreading it evenly.
- Bake in the preheated oven for about 30-35 minutes or until the edges are golden and the filling is set.
- Let the tarts cool for a few minutes before serving.
Notes
Be patient while caramelizing the onions; it enhances their flavor. Use fresh ingredients for the best taste, especially cheese and herbs. Experiment with different cheeses based on your preference.
Nutrition
Serving: 1gCalories: 280kcalCarbohydrates: 20gProtein: 6gFat: 20gSaturated Fat: 10gSodium: 350mgFiber: 1gSugar: 2g
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