Caramelized Onion, Mushroom & Gruyere Tartlets

Name: Caramelized Onion, Mushroom & Gruyere Tartlets
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Yield: 16 3-inch tartlets
Ingredients: 1 tablespoon olive oil; 1 large yellow onion; 1 tablespoon unsalted butter; 16 ounces white button mushrooms; 1 clove garlic; ½ teaspoon dried thyme; salt and pepper; ¼ cup white wine; 2 sheets puff pastry; 1 cup shredded gruyere cheese; 1 egg + 1 tablespoon water; Handful of parsley

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4.5

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Excellent

Prep Time
20 mins
Cook Time
20 mins
Total Time
1 hr
Servings
16 3-inch tartlets
Calories
71 kcal
Course
Appetizer
Cuisine
American

Caramelized Onion, Mushroom & Gruyere Tartlets

John Morgan

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These vegetarian tartlets are perfect to serve as an easy appetizer

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Ingredients

Servings

1 tablespoon olive oil
1 large yellow onion thinly sliced
1 tablespoon unsalted butter
16 ounces white button mushrooms thinly sliced
1 clove garlic chopped
½ teaspoon dried thyme
salt and pepper to taste
¼ cup white wine can substitute chicken or vegetable broth
2 sheets puff pastry thawed according to directions on package
1 cup shredded gruyere cheese can substitute any variety of Swiss cheese
1 egg + 1 tablespoon water beaten together (for the egg wash)
Handful of parsley chopped

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Instructions

Preheat oven to 400 degrees F and line two baking sheets with parchment paper.
Heat the olive oil in a wide, heavy-bottomed pan over medium-low heat and add the onions. Cook, stirring occasionally, until they begin to caramelize, about 20 minutes.
Add the butter to the pan. Once melted, add the mushrooms and saute, stirring occasionally, until they are completely soft and all of the liquid evaporates, about 20 minutes.
Add the garlic and the thyme and saute until fragrant, about 1 minute. Season with salt and pepper to taste.
Add the wine, scraping the bottom of the pan to pull up all of the browned bits, and cook until all of the liquid has evaporated. Remove from heat.
Unfold the thawed sheets of puff pastry and cut out circles from the dough, placing them evenly spaced on the baking sheets. Using a very sharp knife, make four small scores around the perimeter of the dough, about ¼ to ½-inch from the edge.
Top the rounds of puff pastry with a small spoonful of the onion and mushroom mixture, trying to keep the filling within the score marks. Top with the shredded Gruyere cheese. Brush the edges of the dough rounds with the egg wash.
Bake until the pastry is golden brown, about 15 to 25 minutes. Garnish with fresh chopped parsley.

Nutrition Information

Show Details

Calories 71kcal (4%) Carbohydrates 2g (1%) Protein 3g (6%) Fat 5g (8%) Saturated Fat 2g (10%) Cholesterol 21mg (7%) Sodium 38mg (2%) Potassium 113mg (3%) Vitamin A 140IU (3%) Vitamin C 1.6mg (2%) Calcium 87mg (9%) Iron 0.3mg (2%)

Nutrition Facts

Serving: 163-inch tartlets

Amount Per Serving

Calories 71 kcal

% Daily Value*

Calories	71kcal	4%
Carbohydrates	2g	1%
Protein	3g	6%
Fat	5g	8%
Saturated Fat	2g	10%
Cholesterol	21mg	7%
Sodium	38mg	2%
Potassium	113mg	2%
Vitamin A	140IU	3%
Vitamin C	1.6mg	2%
Calcium	87mg	9%
Iron	0.3mg	2%