Start crock pot. Melt butter in crock pot and pour into separate dish after melted. In a pot, boil macaroni until almost done. In a separate bowl, beat eggs, milk, evaporated milk, soup, and 3 cups of cheese. Pour macaroni into bowl, pour over butter and then wet mixture. Mix slightly.
Allow to cook on low for 3 hours. Pour remaining cup of cheese on top and sprinkle with paprika.