Twice-Baked Potato Casserole

6 medium unpeeled potatoes, baked
1/4 t. salt
1/4 t. pepper
1 lb sliced bacon, cooked and crumbled
3 cups (24 oz) sour cream
2 cups shredded mozzarella cheese
2 cups shredded cheddar cheese
2 green onions, chopped

Cut baked potatoes into 1 inch pieces. Place half in a greased 9 x 13 inch baking dish. Sprinkle with half of the salt, pepper and bacon. Top with half of the sour cream and cheeses. Repeat layers. Bake, uncovered, at 350 degrees for 20 minutes or until cheese is melted. Sprinkle with onions. Makes 6-8 servings