1 lg. (1 lb) box macaroni, cooked and drained
2 tbsp. vegetable oil
2 sticks butter
1 lg. can evaporated milk
1 1/2 c. milk
1 lg. onion, chopped fine
3 c. Cheddar cheese, grated (12 oz.)
1 can Cheddar cheese soup

Oil crock pot, mix all ingredients, using only 1/2 of grated cheese. Put mixture in crock pot and put remaining cheese on top. Let simmer in crock pot for 4 or more hours.