Caramelized Onion And Mushroom Tarte Tatin

• 1/4 cup unsalted butter
• 1 large sweet onion (such as Vidalia(R)), sliced
• 2 tablespoons olive oil
• 1 (8 ounce) package crimini mushrooms, sliced
• 1 pinch salt and ground black pepper to taste
• 1 (17.5 ounce) package frozen puff pastry, thawed
• 1 (11 ounce) log goat cheese
• 1 egg, beaten
• 1 pinch thyme, or to taste

1. Melt butter in a saucepan over medium-low heat; cook and stir onion in hot butter until soft and caramelized, 30 to 60 minutes.
2. Heat olive oil in a skillet over medium-high heat; cook and stir mushrooms until browned and tender yet crisp, about 10 minutes. Season with salt and pepper.
3. Preheat oven to 400 degrees F (200 degrees C).
4. Roll puff pastry out on a lightly-floured work surface. Cut out 5-inch circles using a round cutter and place on a baking sheet.
5. Bake in the preheated oven until lightly browned and puffed, about 12 minutes. Transfer puffs to a wire rack to cool completely.
6. Beat goat cheese and egg together in a bowl until smooth. Season with thyme. Spread goat cheese mixture over cooled pastry puffs; top each with caramelized onions and mushrooms. Place pastries back onto baking sheet.
7. Bake in the oven until warmed through, about 5 minutes.

unsalted butter, sweet onion, olive oil, crimini mushrooms, salt, pastry, goat cheese, egg, thyme

Taken from www.allrecipes.com/recipe/241784/caramelized-onion-and-mushroom-tarte-tatin/ (may not work)