Cook the quinoa according to package directions.
Combine the flax seed meal and water in a small bowl and set aside.
Preheat the oven to 400℉ and line a baking sheet with parchment paper or a silicone baking mat.
Grind the walnuts in a blender or food processor and set aside.
Chop the sweet potatoes into fries, coat in olive oil and spices, and cook them in the air fryer on 390℉ for 25 minutes plus the required warm up time for your air fryer. Pause every five minutes to stir the fries. If you don’t have an air fryer you can bake the fries in the oven for 30 to 45 minutes at 400℉, flipping halfway through.
While the fries are cooking, finish making the burgers. Drain and rinse the can of black beans and place them in a medium mixing bowl. Mash with a potato masher or fork.
Add the breadcrumbs, cooked quinoa, ground walnuts, and flax seed mixture to the black beans. Use your hands to combine.
Add the remaining burger ingredients - onion powder, chopped or pressed garlic cloves, and gluten free soy sauce. Mix with your hands.
Form burger mixture into 8 patties and place them on the lined baking sheet. Bake in the oven for 20 minutes - flipping halfway through.
Slice your onion and grape tomatoes.
Make the spicy tahini sauce by combining all ingredients in a bowl and whisking together.
Once everything is cooked, assemble your bowls - mixed greens, sweet potato fries, sliced onion and grape tomatoes, 1/2 sliced avocado, 2 bean burger patties, and a drizzle of spicy tahini sauce. Enjoy!