Black Bean And Quinoa Veggie Burgers

Name: Black Bean And Quinoa Veggie Burgers
Ingredients: 1/2 cup quinoa; 1 teaspoon olive oil; 1 small red onion, chopped; 3 cloves garlic, minced; Kosher salt; 2 cans (15.5 oz each) black beans, rinsed and drained; 2 tablespoons tomato paste; 1 large egg; 2/3 cups cooked corn (fresh or canned); 1/4 cup chopped cilantro; 1 tablespoon minced chipotles in adobo; 1 1/2 teaspoon ground cumin; 1 cup rolled oats, ground into crumbs; 1/2 cup fat free Greek yogurt; 1 teaspoon minced chipotles in adobo; 1/2 teaspoon adobo sauce; 1 teaspoon honey; 1/2 teaspoon dijon mustard; 6 multigrain hamburger rolls; Lettuce, avocado slices and tomatoes for toppings (optional)