1 lb ground beef, browned and drained
3 tablespoons catsup
2 teaspoons mustard
2 cups processed cheese spread, cubed
10 hamburger buns, split
Place ground beef in a slow cooker; add catsup and mustard, mixing well. Top with cubed cheese. Cover and cook on low setting for 3 to 4 hours. Stir beef mixture gently; spoon onto buns.