Brie Mushroom Pastries

Ingredients (11)

• 2 teaspoons olive oil
• 12 small baby portobello mushrooms (about 6 ounces), stems removed
• 3 ounces diced pancetta or bacon strips (about 1/2 cup)
• 1 pound baby portobello mushrooms, finely chopped
• 2 shallots, finely chopped
• 3 garlic cloves, minced
• 1/4 teaspoon salt
• 1/8 teaspoon pepper
• 1 sheet frozen puff pastry, thawed
• 1 large egg, lightly beaten
• 2 ounces Brie cheese, cut into 12 cubes (1/2 inch)