This mixed grain veggie burger from Foodness Gracious is wholesome and delicious. The patty is composed of a grain blend (available at any supermarket) which could contain anything from rice, quinoa, barley and more. Each patty is topped with creamy avocado and a parmesan crisp. All the flavors in the burger are tied together with a spicy mayo (skip the ketchup!). To make this gourmet burger at home, view the recipe here.