Combine water and dry quinoa in a small saucepan. Bring to a boil over high heat, then reduce to a simmer over low heat. Cover the pot and simmer for 15 minutes, or until the quinoa is cooked.
Chop the broccoli, mushrooms, red bell pepper, and onion into 1 inch large chunks. Add the chopped vegetables and garlic cloves to food processor. Process into small quinoa-sized bits.
Spread the pureed veggies into a thin layer on a parchment paper or silicon baking mat lined baking sheet. Sprinkle with ¼ teaspoons salt and fresh ground black pepper to taste. Roast for 15 minutes, or until the veggies start to brown. Remove from the oven and set aside.
Make your flax egg by combining 1 tablespoon ground flaxseed with 2 tablespoons water. Let rest for 5 minutes.
Add black beans to the food processor. Processor until mostly pureed; some whole beans can still remain.
In a large mixing bowl combine: pureed black beans, ¾ cup cooked quinoa, cumin, chili powder, optional nutritional yeast, and 1 and ½ cups roasted vegetable puree and flax seed egg. Stir to combine.
Heat a large skillet over medium heat. Add 1 tablespoon of olive oil. Form black bean mixture into 8 patties that are 3-4 inch wide and ½ inch thick (see blog post for size reference). Pan-fry patties for 8-10 minutes, flipping carefully when golden brown.
Enjoy on a bun with your favorite burger toppings. Keeps in the fridge for 3-4 days.
Flax egg: This is made using 1 tablespoon ground flaxseed + 3 tablespoons water. You can also use an equal amount of chia seeds or one egg in place of a flax egg.
Fresh veggies: Mushrooms, broccoli, peppers and onions are used to make the roasted veggie filling. You can use most vegetables here. Try cauliflower, zucchini, or even double the amount of mushrooms.
Extra veggie puree: Keep in the fridge for up to 3 days or freeze for later use. It tastes great mixing into tofu scrambles, omelets, or on hummus with toast.
Storage and reheating: Keep leftovers refrigerated in a closed container for up to 5 days. I prefer to cook all of the patties at once and then reheat them on the stove, but you can also store them uncooked.