2 1/2 pounds lean ground beef
1 cup chopped onion
2 (10 3/4 ounce) cans condensed fiesta nacho cheese soup
3/4 cup ketchup
16 hamburger buns

In a 12-inch skillet cook ground meat and onion over medium heat until meat is brown and onion is tender. Drain off fat.

In a 3 1/2 or 4-quart slow cooker combine meat mixture, soup and ketchup.

Cover and cook on LOW for 4 1/2 to 5 hours or on HIGH for 2 to 2 1/2 hours.

Makes 16 servings.