by Kelly G.
2 cups cooked macaroni
4 cups cheddar cheese
1/2 cup mayonnaise
1/2 cup sour cream
1 can cream of chicken soup
1/2 tsp. dry mustard
1 tsp. onion powder
1/2 tsp. pepper
Cook macaroni. Drain and rinse in cold water. Combine with rest of ingredients. Cook on high for two hours or low for 3 hours in crock pot.