Mix ingredients 2-13 in bowl and add to crock pot.
Add onions, tomatoes and butter and cook for 8-10 hours.
Add pepper to taste.
Cook macaroni, drain and add oil and butter to keep from sticking.
When about ready to serve, add 1/4 cup of sour cream and simmer.
**I know some people do not prefer sour cream---but this amount will only add to the creaminess and help to balance the taste, otherwise it may be too thin. Add slightly less if there is a concern and you will not know that sour cream is added!**.