This recipe appeared in numerous newspapers around the country in Fall 2009. It quickly became a favorite in our household. My husband loves to grow his own zucchini, so I'm always on the lookout for recipes that call for it. What we've found: We've tried several brands of meatballs but like the ones from Costco the best. We mix up the sour cream into each bowl of soup before eating it, which makes it creamy.