Chili Con Queso
["2 lb. Velveeta cheese, cubed", "1 lb. American cheese, cubed", "1 small onion, diced", "2 cans tomatoes and green chilies or 2 1/2 cans tomatoes plus 1 (4 oz.) can chopped green chilies with juice plus 1 onion"]
["In double boiler melt Velveeta and American cheese (a few cubes at a time).", "Brown onions in a separate pan, add chili and tomatoes and keep warm.", "When cheese has melted, add the chili, etc.", "Mix gradually.", "This freezes well so make a big batch.", "Dip for use with nachos."]
["Velveeta cheese", "American cheese", "onion", "tomatoes"]