1-1/2 lb. lean ground beef
1 egg, beaten
1/4 tsp. garlic powder
1 cup chopped onions, divided
1/4 cup plain bread crumbs
12 oz. bottle chili sauce
18 oz. jar grape jelly
15 oz. can tomato sauce
1/4 cup Marsala wine
Make meatballs: Mix ground beef with beaten egg, garlic powder,