Place the quinoa in a small saucepan along with 1 cup of water. Bring the water to a boil then reduce heat to medium low and cover the pan. Cook 10-15 minutes until the water is absorbed and quinoa is cooked. Remove from heat.
Heat the oil in a small sauté pan over medium heat and add the onion and garlic. Season them with a pinch of salt and sauté until onions are softened, 5-6 minutes. Place the mixture into a large bowl. Add approximately 1½ cans of black beans to the bowl and using a potato masher or fork, mash all of the ingredients together until a pasty mixture forms.
Stir in the remaining beans along with the tomato paste, egg, corn, cilantro, chipotles, cumin and ½ teaspoon salt. Stir in the cooked quinoa and ground oats until evenly distributed.
Form the mixture into 6 equal patties, compacting them well with your hands as you form them. Place the patties on a baking sheet, cover them with plastic wrap and refrigerate for at least a few hours or overnight.