2 prepared pizza crust, unbaked (either storebought or your own recipe)
3 cups mashed potatoes (either leftover or reconstituted instant mashed potatoes are fine)
1 large onion, peeled and diced
1/2 cup butter or 1/2 cup margarine
8 ounces cheddar cheese, grated
8 ounces provolone cheese, grated
8 ounces mozzarella cheese, grated (mix with provolone cheese)
Directions:
1. Saute onion in butter or margarine until translucent and golden; stir into mashed potatoes along with cheddar cheese. 2. Refrigerate to let flavors meld. 3. Preheat oven to 400°F. 4. Spread pizza crusts with potato mixture. 5. Top with Provolone and Mozzarella cheese mixture and bake until shells are baked and cheese is melted.
