Cut Velveeta into 2 inch cubes. Place cubes into crock pot with the Ro*tel, chili and shredded cheese. Mix together. Turn crock pot on Low setting and cover, stirring occasionally. When all cheese is completely melted, it's time to enjoy!
(It usually takes an hour and a half or so on Low temp, but if you need it quicker, use High temp, but watch it and stir often to prevent burning).
If your crock pot has a "Keep Warm" setting use that after the cheese is melted. Serve warm.