Buffet Casserole

1 lb. ground beef
1 # 2 can whole kernal corn
1 med. onion diced
1 can tomato soup
1 tsp. salt
1/4 tsp. pepper
1/2 C. milk
2 C. cooked potatoes diced

Brown meat and onion, add salt and pepper. Put meat and onions in the bottom of a greased 2 qt. Casserole, then layer the corn and potatoes on top. Mix milk and soup and pour over top. Bake uncovered at 375 for 20 minutes.