Dan. Here are two of many meatball recipes using grape jelly that have already been posted on TKL.
I suggest you also do a search on TKL for: Meatball Grape
That search will identify more recipes.
______________________________

Title: Recipe: Grape Jelly Meatballs
Posted By: sara, ga
Date: October 31st 1997
In Reply to: Re: Baker's Square
Board: TKL Cooking Club

SWEDISH MEATBALLS

1 lb. ground round
1/4 lb. sausage
1/4 c. bread crumbs
1 tbsp. Worcestershire sauce
1/2 tsp. garlic salt
1/8 tsp. pepper
1/4 c. light cream
1 egg
1/2 c. grated Parmesan cheese
--SAUCE:--
1 (10 oz.) jar grape jelly
1 (12 oz.) bottle chili sauce
Combine all ingredients except the jelly and chili
sauce. Form into small cocktail size meatballs. Brown
in oiled electric skillet at 300 degrees. Meatballs may
be refrigerated or frozen until served. Melt grape jelly
on warm setting in electric skillet. Add chili sauce and
mix. Add meatballs to sauce. Heat and hold on warm
to serve. Serves 12 for appetizers.
__________________________

GRAPE JELLY MEATBALLS

--MEATBALLS:--
2 lbs. hamburger
2 eggs, slightly beaten
1 c. dry bread crumbs
2 tbsp. parsley flakes
1 onion, chopped
2 tsp. salt
2 tbsp. Worcestershire sauce
1/2 tsp. pepper

--SAUCE:--
1 (12 oz.) bottle chili sauce
1 tbsp. lemon juice
1 (10 oz.) jar grape jelly
1 tbsp. soy sauce
2 tbsp. brown sugar

Mix hamburger with rest of meatball ingredients. Shape
into balls. Brown meatballs; drain. Mix sauce
ingredients well. Drop meatballs into sauce. Simmer
45 minutes, covered.