Thanks Sandy!
Ingredients
2 lb hamburger
2 cups rice
1/2 cup minced onion
1 tsp salt
1/2 tsp pepper
2 eggs
Topping
4 cups ketchup
1 Tblspn mustard
1 cup brown sugar
Bake at 375 degrees. Time depends on the size of the meatballs. Small ones for about 40-45 minutes. Large ones around 1 hour 15 minutes.