These classic tacos contain lean ground beef, refried beans, and a variety of seasonings. The taco mixture makes a delicious filling for taco shells. Another way to enjoy the filling mixture and garnishes is on nachos. Make a big platter of nachos with the ground beef and refried beans along with lots of shredded cheese and your favorite garnishes. If you're counting carbs, turn these tacos into a hearty supper salad Serve the ground beef mixture on lettuce leaves with shredded cheese, diced tomatoes, and sour cream. Add salsa and avocado wedges if you'd like.