INGREDIENTS
1 1/2 lb
lean ground beef
2 tbsp
onion , finely chopped
1
egg
1/3 cup
panko bread crumbs
1/2 cup
grated cheddar cheese
1/2 tsp
fresh ground black pepper
1 1/2 oz
cheddar , cut into 10 small cubes
1 cup
prepared macaroni and cheese , chilled (I used this Quick Stove Top Mac & Cheese Recipe)
2 tbsp
barbecue sauce (optional)