Ingredients
1
pound lean ground beef
2
tablespoons ketchup
2
teaspoons instant minced onion
1
teaspoon yellow mustard
8
ounces American cheese, cut into 2-inch cubes (2 cups)
24
miniature sandwich buns, split
Preparation
Cook beef in 10-inch skillet over medium-high heat about 8 minutes, stirring frequently, until brown; drain. Stir in ketchup, onion and mustard.
Spray 3 1/2- to 4-quart slow cooker with cooking spray. Spoon beef mixture into cooker. Top with cheese.
Cover and cook on low heat setting 3 to 4 hours or until mixture is hot and cheese is melted.
Serve beef mixture with buns. Beef mixture will hold on low heat setting up to 3 hours.
