Caramelized Onion Tart

Name: Caramelized Onion Tart
Prep time: 30 min
Cook time: 18 min
Total time: 48 min
Yield: 6 serving
Ingredients: 2 heets puff pastry; 4 cups Sweet Yellow Onions; 1 tbsp olive oil; 2 tsp brown sugar; 1/2 tsp kosher salt; 1 cup Gruyere cheese; 2 tsp fresh thyme; 2 tbsp heavy cream

User Reviews

5.0

9 reviews

Excellent

Prep Time
30 mins
Cook Time
30 mins
Total Time
48 mins
Servings
6
Calories
627 kcal
Course
Appetizer
Cuisine
French

Caramelized Onion Tart

Gemma White

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This tender and delicious puff pastry topped with caramelized onions makes the perfect appetizer or side dish! It is insanely delicious and worth being served at any party or get-together!

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Ingredients

Servings

2 heets puff pastry, thawed in the fridge overnight
4 cups Sweet Yellow Onions, sliced
1 tbsp olive oil
2 tsp brown sugar
1/2 tsp kosher salt
1 cup Gruyere cheese, shredded
2 tsp fresh thyme, destemmed and minced
2 tbsp heavy cream

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Instructions

Heat oil in a large deep pan on medium-high heat. Add onions and cook for about 10 minutes or until softened and wilted.
Add the salt and brown sugar and cook uncovered for an additional 20 minutes until the onions are caramelized. Set aside and allow to cool while you prepare the tart. Make sure your onions are cooled enough before you put them on the cold tart.
Preheat the oven to 400° Fahrenheit.
Carefully unroll each pastry tart. Place them slightly overlapping on a baking sheet lined with parchment paper. Lightly press the two tarts creating one large rectangular-sized tart. Fold up the sides around the whole tart to create a pretty finished edge. Prick with a fork every inch or so to help prevent bubbling while baking.
Sprinkle the cheese evenly on the tart.
Evenly lay the onions on top of the pastry.
Using a pastry brush, brush the folded edges of the pastry with heavy cream to create that golden brown edge. Sprinkle on the thyme leaves.
Bake for 18-20 minutes or until cheese has melted and pastry is crisp. Cool for 5 minutes before cutting into squares or triangles. Garnish with additional thyme leaves if desired.

Nutrition Information

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Calories 627kcal (31%) Carbohydrates 48g (16%) Protein 14g (28%) Fat 42g (65%) Saturated Fat 14g (70%) Polyunsaturated Fat 5g Monounsaturated Fat 22g Cholesterol 30mg (10%) Sodium 560mg (23%) Potassium 234mg (7%) Fiber 3g (12%) Sugar 7g (14%) Vitamin A 317IU (6%) Vitamin C 9mg (10%) Calcium 262mg (26%) Iron 2mg (11%)

Nutrition Facts

Serving: 6Serving

Amount Per Serving

Calories 627 kcal

% Daily Value*

Calories	627kcal	31%
Carbohydrates	48g	16%
Protein	14g	28%
Fat	42g	65%
Saturated Fat	14g	70%
Polyunsaturated Fat	5g	29%
Monounsaturated Fat	22g	110%
Cholesterol	30mg	10%
Sodium	560mg	23%
Potassium	234mg	5%
Fiber	3g	12%
Sugar	7g	14%
Vitamin A	317IU	6%
Vitamin C	9mg	10%
Calcium	262mg	26%
Iron	2mg	11%