I found this one in The Best of Country Cooking.

Barbecued Meatballs

MEATBALLS:
3 lbs. ground beef
1 can (12 ozs.) evaporated milk
1 cup oatmeal
1 cup cracker crumbs
2 eggs
1/2 cup chopped onion
1/2 tsp. garlic powder
2 tsp. salt
1/2 tsp. pepper
2 tsp. chili powder

SAUCE:
2 cups catsup
1 cup brown sugar
1/2 tsp. liquid smoke or to taste
1/2 tsp. garlic powder
1/4 cup chopped onion

To make meatballs, combine all ingredients (mixture will be soft) and shape into walnut-size balls. Place meatballs in a single layer on wax paper-lined cookie sheets; freeze until solid. Store frozen meatballs in freezer bags until ready to cook.

To make sauce, combine all ingredients and stir until sugar is dissolved.

Place frozen meatballs in a 13-in. x 9-in. x 2-in. baking pan; pour on the sauce. Bake at 350 degrees for 1 hour. Yield: 80 meatballs.