Cook beef and garlic over medium-high heat in a 12-inch skillet, approximately 8-10 minutes. It will continue to cook in the crockpot, so it's okay to cook it medium/medium well instead of all the way well done. Crumble the beef while you cook to your liking. Drain the skillet of the oil.
1½ pounds lean ground beef, 1 tablespoon minced garlic
Add the cooked beef to a nonstick sprayed crockpot. Add in the cubed cheese, onion, bacon crumbles, and salt and pepper. Stir to combine as much as possible.
8 ounces Velveeta, ½ cup diced onion, 1 cup cooked bacon crumbles, Kosher salt and freshly ground black pepper
Cook on low for 5-6 hours, or on high for 2 hours, stirring occasionally.
When ready to serve, fill buns with the beef mixture and top with desired garnishes.
6 hamburger buns, Optional Toppings: