Potato Casserole - cooking recipe

Ingredients

potatoes
onions
American cheese
Mozzarella cheese
butter to taste
salt to taste
pepper to taste

Preparation

Peel and slice potatoes.
Slice onions.
Use sliced or grated cheese.
Layer potatoes, onions, cheeses, butter, salt and pepper in that order.
Keep adding layers until casserole dish is full or enough for a meal.
Cover dish.
Bake at 325\u00b0 approximately 1 hour or until potatoes are tender.