Smoky Black Bean Beet Burgers

Bahan-bahan (8 porsi)

• 3/4 cup cooked quinoa
• 1/2 large red onion ((finely diced // 1/2 onion yields ~3/4 cup))
• 1 cup finely chopped mushrooms ((shitake, baby bella, or white button))
• 1 pinch each salt & pepper
• 1 15 -ounce can black beans ((well rinsed and drained))
• 1 cup finely grated raw beet
• 1 tsp cumin
• 1/2 tsp chili powder ((or sub extra cumin))
• 1/4 tsp smoked paprika
• ~1/2 cup raw walnuts ((crushed or ground into a loose meal))