May 8, 2013 16:19 Sweet and Sour Meatballs Sweet and Sour Meatballs Advocate staff photo by CATHERINE THRELKELD -- Having a party? Serve easy-to-make Sweet and Sour Meatballs as appetizers. Julie Kay May 08, 2013 Comments ADVOCATE-TESTED RECIPE Sweet and Sour Meatballs Serves 8 to 10. Recipe is by Julie Kay. 1 (26-oz.) pkg. frozen prepared Italian meatballs, semithawed 1 (1.25-oz.) pkg. dried onion soup mix 2 (10-oz.) jars sweet and sour sauce 1 tbl. Worcestershire sauce 1. Put meatballs into slow cooker and pour dried onion soup mix over all. Add sweet and sour sauce and Worcestershire sauce. 2. Cook on Low 4 to 6 hours and serve.