1/2 lb. ground beef
1 small onion
2-2 1/2 c. flour
1 tbsp. sugar
3/4 c. ketchup
3/4 c. milk
1/2 c. butter, melted
2 eggs
1 tsp. prepared mustard
2 c. (8 oz.) shredded cheddar cheese

In skillet, cook beef and onion over medium heat until meat is done; drain. In a bowl, combine the flour and sugar. In another bowl, combine the ketchup, milk, butter, eggs and mustard; stir into the dry ingredients until moistened. Fold in the beef mixture and cheese. Fill greased miniature muffin cups three-fourths full.

Bake at 425°F for 15 to 18 minutes.