Cook the ground beef in a large skillet over medium-high heat until no longer pink. Drain grease and return meat to the pan.
Reduce heat to low and add the ketchup, seasonings, macaroni, and broth to the pan and stir well to combine.
Cover and simmer for 12-15 minutes until macaroni is cooked through.
Remove the pan from the heat and stir in the sour cream.
Return the pan to the warm burner and stir in the shredded cheese until well combined. Add any more broth or water if needed to make it more creamy.