recipe with mushrooms

Ingredients 1 pound (450g) mushrooms, cleaned and sliced (button, cremini, or your favorite variety) 3 tablespoons unsalted butter 2 tablespoons olive oil 4 cloves garlic, minced 1 teaspoon dried thyme Salt and black pepper to taste 1/4 cup freshly grated Parmesan cheese (optional) Fresh parsley, chopped (for garnish)