3/4 lb. ground beef, browned and drained
1/2 c. Chef-Boy-Ar-Dee pizza sauce
1 tsp. instant onion (or 1 tbsp. finely chopped onion)
1 can refrigerated biscuits
3/4 c. Mozzarella cheese

Combine first 3 ingredients. Place biscuits in lightly greased muffin cups. Pile beef mixture on top and sprinkle with cheese. Bake at 400 degrees for 10 to 12 minutes.