Prepare the Veggie Burger Mixture: In a large bowl, combine the mashed black beans, cooked quinoa (or rice), grated sweet potato, breadcrumbs, oats, chopped onion, and garlic. Stir well to combine.
- Add Seasonings: Stir in the soy sauce (or tamari), ground cumin, smoked paprika (if using), and salt and pepper to taste. If the mixture feels too wet, add a bit more breadcrumbs or oats until it holds together. If it feels too dry, add a splash of water to help bind the mixture.
- Form the Patties: Divide the mixture into 4 equal portions and shape each portion into a patty. Press them firmly to ensure they hold together.
- Cook the Patties: Heat 1-2 tablespoons of olive oil in a large skillet over medium heat. Once hot, add the patties to the skillet and cook for 4-5 minutes on each side until golden brown and crispy. Be careful when flipping, as the patties may be delicate. You can also bake the patties at 375°F (190°C) for about 25 minutes, flipping halfway through for a hands-off option.
- Assemble the Burgers: Toast the burger buns lightly, if desired. Place a veggie patty on each bun and top with your favorite toppings like avocado, lettuce, tomato, pickles, cheese, and sauces.
- Serve: Serve the veggie burgers immediately with a side of fries, salad, or roasted vegetables for a complete meal.