thanksgiving appetizer recipe

Ingredients: 24 large white mushrooms 2 tablespoons olive oil 1 small onion, finely chopped 2 cloves garlic, minced 1/4 cup breadcrumbs 1/4 cup grated Parmesan cheese 2 tablespoons fresh parsley, chopped 1/4 teaspoon dried thyme 4 ounces cream cheese, softened Salt and freshly ground black pepper to taste