Golden Potato Cakes with Savory Mushroom Filling - cookrisp

Ingredients

• 3 cups mashed potatoes (about 4 medium potatoes, cooked and mashed)
• 1 cup mushrooms, chopped finely
• 1 small onion, chopped
• 2 tablespoons butter or oil
• 1/2 cup shredded mozzarella cheese (optional)
• 1/4 cup flour
• 1 egg
• Salt and pepper to taste
• 2 tablespoons fresh parsley, chopped
• 1/4 cup breadcrumbs
• Oil for frying