Make a batch of meatballs. You can find my favorite recipe here.
Place meatballs in the bottom of a 9 x13 casserole dish and bake uncovered at 350 degrees for 20 minutes.
In a saucepan combine the following ingredients:
1 cup ketchup
1/2 cup brown sugar
1/4 cup chopped onion
1/4 tsp. garlic powder
1 tablespoon balsamic vinegar (optional: I just love the flavor)
1/4 tsp. liquid smoke (I did not have this and it was not missed.)
Bring to a boil and then simmer for 2 minutes. Pour over the meatballs. You may need to stir a bit to get them meatballs covered in the sauce.