What makes this recipe for Vegetarian'Meatballs' so popular? This recipe for Vegetarian Zucchini 'Meatballs' by Gina at Skinnytaste has gone viral on my Pinterest boards since I posted it yesterday. I have not seen such a reaction to a recipe in a long time, if ever. I can think of at least 6 reasons this Vegetarian Zucchini 'Meatballs recipe has become an instant hit: One, it's zucchini season so many people are looking for recipes using zucchini, especially if they grow their own zucchini in their gardens. Two, it's vegetarian, therefore appealing to non-meat eaters who like this traditional meal