Place the ground beef in a large skillet over medium heat. Cook, stirring occasionally to break up the meat, until fully cooked. Drain.
Place the ground beef in a crockpot along with the Velveeta and both cans of chili. Cook on high until heated through, about 1 hour.
Turn the crockpot to warm and serve from the crockpot, or transfer to a serving dish. Serve with tortilla chips.
Notes
You can substitute 2.5 cups homemade chili in place of the canned chili.Want to add some spice? Make this with Mexican Velveeta and add a few shakes of cayenne pepper to taste.