Email to AMEE Dip: Chili Con Queso Source of Recipe KK List of Ingredients 1/2 lb. Velveeta cheese 1/2 lb. Old English cheese 1 medium onion, chopped 1 can tomatoes (10 oz.) Instructions Mix all ingredients and cook in top of double boiler for about 1 1/2 hours. Serve in a chafing dish or fondue pot to keep warm. Serve with tortilla or corn chips.