Add the ground beef, black beans, corn, salsa, onion, garlic, chili powder, cumin, and beef broth to the slow cooker.
Season with salt and pepper, then stir everything together until the spices are evenly distributed.
Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours.
Break up the beef with a spoon until it is fully crumbled and mixed with the beans and corn.
Spoon the mixture over cooked rice and top with shredded cheddar cheese before serving.