Frittata Primavera

Ingredients

• 3 tablespoons butter
• 1 cup potato, peeled and diced
• 1 cup chopped onion
• 1 cup small white mushroom, sliced
• 12 ounces cooked asparagus, cut into 1/2 inch pieces, reserve tips
• 1 cup diced ham (optional)
• 12 large eggs, beaten
• 1 1/2 cups half-and-half cream (fat free works great)
• 2 1/2 cups mozzarella cheese, shredded
• 1 cup whole milk ricotta cheese
• 1/2 cup grated parmesan cheese
• 1/2 cup chopped parsley
• salt and pepper