Ingredients
All-purpose flour, for rolling
1 sheet frozen puff pastry (half a 17.3-ounce package), thawed
1 tablespoon olive oil
1 1/4 pounds mixed mushrooms, such as cremini, shiitake (stems removed), and button, thinly sliced
Coarse salt and ground pepper
3/4 cup coarsely shredded Pecorino Romano cheese (3 ounces)
2 tablespoons snipped fresh chives
Preparation
Preheat over to 400 degrees. On a lightly floured work surface, roll pastry to an 11-inch square, lightly score each square (do not cut all the way through), forming a 1-inch border. Using a fork, prick dough inside border.
Place pastry squares on baking sheet; refrigerate 10 minutes. Bake until golden, about 15 minutes.
Meanwhile, in a large skillet, heat oil over medium-high. Add mushrooms; season with salt and pepper. Cook, tossing frequently, until tender, 6 to 8 minutes.
Dividing evenly, sprinkle 1/2 cup Pecorino in center of baked pastry squares; top with mushrooms and remaining 1/4 cup cheese. Bake until cheese is melted and lightly browned, 6 to 8 minutes. Sprinkle with chives, and serve.
