Enjoy this recipe from Slow Cooker to the Rescue.
Submitted by: Claire Bertram from Lexington, KY
1 lb. ground beef, browned and drained
3 T. catsup
2 t. mustard
2 c. pasteurized process cheese spread, cubed
10 hamburger buns, split
Place browned 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. Makes 10 sandwiches.