Exotic Mushroom Tarts | Emerils.com

Ingredients

• 2 tablespoons unsalted butter
• 1 cup thinly sliced yellow onions
• 1/8 teaspoon plus 1/2 teaspoon salt
• 1/8 teaspoon plus 1/2 teaspoon freshly ground black pepper
• 1/2 pound assorted exotic mushrooms, such a shiitakes, oysters, and chanterelles, wiped clean, stems trimmed, and sliced (about 3 cups)
• 1 teaspoon chopped garlic
• 1/4 pound goat cheese, crumbled
• 1/2 cup plus 1 tablespoon freshly grated Parmigiano-Reggiano cheese
• 1 sheet (15 X 10 inches) frozen puff pastry (found in the frozen food section), defrosted
• 1 large egg, lightly beaten
• 1 tablespoon chopped fresh parsley leaves