Preheat oven to 400 degrees. Heat up a large skillet, to medium high heat.
Once pan is hot, grease with olive oil and add onion, garlic, and corn until cooked (5-8 mins). Set aside, but keep pan hot.
Meanwhile, add cooked and peeled sweet potato and black beans to a large bowl. Mash beans and sweet potato together using a fork or pastry knife. Some of the beans should be mashed up, leave some beans whole.
In a separate bowl, mix together oats and spices. Toss mixture in with black bean mixture. Mix well. Slowly fold in cooked quinoa, onion, garlic, and corn.
For patties that are approximately 3-4 inches in diameter and 1/2 inch thick. Coat patties with uncooked quinoa for added texture.
Add patties to skillet and cook for 3-4 minutes per side until crispy. Set aside to a cookie sheet.
Bake burgers for 10 minutes. Remove from oven and serve with your favorite toppings.
Notes
*Sweet potato can be microwaved for approximately 4 minutes on high to soften for this recipe. Keep skin on, and poke holes into potato. Leftover burgers freeze well and can be easily defrosted upon single use.