1 lg. pkg. Velveeta cheese, diced
1 (8 oz.) pkg. cream cheese
1 lb. shredded cheddar cheese
1 can Rotel tomatoes

Place Rotel tomatoes in bottom of crock pot and turn on high. Place all cheeses in pot, stirring frequently until melted, then turn crock pot on low. Dip over crackers or chips. Frequently stir mixture.