Upside-Down Mushroom Tartlets from Slbailey5's Recipes
Source: Martha Stewart
Tags: Appetizer
Makes 6 servings

Ingredients

1 sheet frozen puff pastry, thawed and cut into six 3-inch rounds 1 tablespoon extra-virgin olive oil, plus more for muffin pan 1 large shallot, diced small 1 pound cremini mushrooms, sliced Coarse salt and ground pepper 2 teaspoons fresh thyme leaves, plus more for serving 3/4 cup grated Gruyere cheese (2 ounces)

Instructions

Preheat oven to 375 degrees. Place puff pastry rounds in a single layer on a parchment-lined baking sheet and refrigerate while mushrooms cook. In a large skillet, heat oil over medium-high. Add shallot and cook, stirring, until soft, 3 minutes. Add mushrooms and cook, stirring, until soft and browned, 10 minutes. Season with salt and pepper. Stir in thyme and remove skillet from heat. Lightly oil 6 jumbo muffin cups. Divide mushroom mixture and cheese among cups, then top each with a chilled pastry round. Bake until pastry is golden brown and puffed, about 25 minutes, rotating pan halfway through. Run a small knife around cups to loosen tartlets. Place a rimmed baking sheet or large plate over pan and invert to release tartlets. Sprinkle with more thyme. Serve warm.
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Servings: 6