1 can of condensed cream of mushroom soup (DO NOT DILUTE)
1/8 cup of butter divided
1 cup of cheddar cheese divided
8 x8 baking pan
In a large bowl combine, potatoes, onion and soup. Layer the mixture in baking pan and then put 1/2 butter followed by 1/2 cheese. Repeat the next layer and preheat oven and bake 350 degrees for 60 to 70 minutes (until potatoes are tender.