1Brown the ground beef and diced onion in a pan, then drain the grease.
2Add the tomato paste, garlic cloves, salt, pepper, red pepper flakes, paprika, Worcestershire sauce, tomato sauce, diced tomatoes, beef broth, and macaroni to the pan.
3Simmer the mixture until the noodles are cooked.
4Stir in the milk and cheddar cheese until combined.