Recipes: Veggie burger for grilling

Preparation:    Preparation time: 15 mins Cooking time: 15 mins Serving: 6 Ingredients: 3/4 cup old-fashioned rolled oats 1/2 cup walnuts, toasted 3 medium scallions, coarsely chopped (about 1/4 cup) 2 (15-ounce) cans black beans, drained and rinsed (about 3 1/3 cups) 1/2 cup shredded carrot (from 1 medium, unpeeled carrot) 1/4 cup...