INGREDIENTS
1 lb
lean ground beef
1 cup
yellow onion, diced
1/2 cup
real bacon bits
1/4 cup
mayo
1/4 cup
ketchup
1 tbsp
mustard
1/2 tsp
salt
1/2 tsp
pepper
2 tsp
onion powder
12
slices bread
1/2 cup
margarine
4 cups
shredded mozzarella and cheddar blend