Cook and drain elbow macaroni to aldante. Cook and drain ground beef. Mix together Macaroni, ground beef, jars of cheese, and cans of chili while macaroni and ground beef are still hot. Serve right away.
You can also use Tortilla chips instead of elbow macaroni and pour cheese mixture on top and bake for 10 minutes @ 350 till warm. Or use mixture as a dip for chips.