Asparagus and Mushroom Frittata Recipe

Ingredients

• 1 tablespoon butter
• 0.5 pound fresh asparagus, trimmed and cut into 1 inch pieces
• 3 tablespoons olive oil
• 0.5 pound fresh mushrooms, sliced
• 6 eggs
• 1 tablespoon water
• 1 teaspoon chopped fresh thyme
• 0.5 cup shredded mozzarella cheese
• 3 tablespoons freshly grated Parmesan cheese