French Onion and Bacon Tart Atk

Indulge in the irresistible flavors of this French Onion and Bacon Tart, a savory masterpiece that combines the richness of caramelized onions, crispy thick-cut bacon, and melted Gruyere cheese atop a flaky puff pastry crust. Perfectly paired with fresh thyme and a touch of balsamic vinegar for depth, this tart is both elegant and comforting. Easy to prepare with pre-made puff pastry, it’s an ideal option for brunch, a dinner party appetizer, or a hearty snack. The golden, buttery crust and savory-sweet filling come together in perfect harmony, making every slice a crowd-pleaser. With just 20 minutes of prep, this recipe guarantees restaurant-quality flavor in the comfort of your kitchen!

Nutriscore Rating: 56/100

Prep Time:20 mins

Cook Time:55 mins

Total Time:75 mins

Servings: 6

Ingredients

• 2 tablespoons unsalted butter
• 1 tablespoon olive oil
• 3 large yellow onions
• 1 teaspoon granulated sugar
• 1 tablespoon balsamic vinegar
• 6 slices thick-cut bacon
• 1 teaspoon fresh thyme leaves
• 2 tablespoons all-purpose flour
• 1 sheet pre-made puff pastry sheet
• 1 cup gruyere cheese, shredded
• 1 large egg
• 2 tablespoons heavy cream
• 0.5 teaspoons salt
• 0.25 teaspoons black pepper

Directions

Step 1

Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.

Step 2

In a large skillet, melt the butter and olive oil over medium heat.

Step 3

Slice the onions into thin half-moons and add them to the skillet. Cook for 15-20 minutes, stirring occasionally, until the onions are soft and golden.

Step 4

Sprinkle the sugar over the onions and continue to cook for another 5 minutes to caramelize. Stir in the balsamic vinegar and cook for 2 additional minutes. Remove from heat and set aside.

Step 5

In a separate skillet, cook the bacon slices over medium heat until crispy. Remove and place on a paper towel-lined plate, then chop into small pieces.

Step 6

Sprinkle the thyme leaves over the caramelized onions and stir well.

Step 7

Allow the puff pastry sheet to thaw if frozen and lightly flour your work surface. Roll the pastry out to about 12x10 inches and transfer it to the prepared baking sheet.

Step 8

Using a paring knife, gently score a 1-inch border around the edge of the pastry, being careful not to cut all the way through. Prick the inside of the rectangle (not the border) with a fork to prevent it from puffing too much.

Step 9

Spread the caramelized onion mixture evenly inside the scored rectangle. Top with the chopped bacon and shredded Gruyere cheese.

Step 10

In a small bowl, whisk the egg with the heavy cream. Brush this egg wash along the border of the pastry to promote a golden crust.

Step 11

Season the filling lightly with salt and pepper.

Step 12

Transfer the tart to the preheated oven and bake for 20-25 minutes, or until the crust is golden brown and the cheese is melted and bubbly.

Step 13

Allow the tart to cool for 5 minutes before slicing and serving warm.

Nutrition Facts

Serving size	(853.7g)

Amount per serving	% Daily Value*
Calories	1840.3

Total Fat 146.2g	0%
Saturated Fat 64.8g	0%
Polyunsaturated Fat 3.3g
Cholesterol 495.8mg	0%
Sodium 3609.7mg	0%
Total Carbohydrate 73.6g	0%
Dietary Fiber 8.9g	0%
Total Sugars 26.5g
Protein 58.5g	0%

Vitamin D 77.8IU	0%
Calcium 1220.1mg	0%
Iron 4.0mg	0%
Potassium 1058.9mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 71.3%

Protein: 12.7%

Carbs: 16.0%