Prepare the base: In a large bowl, mash 1.5 cans of black beans with a fork, leaving some chunks for texture. Keep 0.5 can of beans whole and add to the mashed beans.
Sauté vegetables: Heat 1 tablespoon olive oil in a skillet over medium heat. Cook diced onion, garlic, and bell pepper for 5-7 minutes until softened.
Combine ingredients: Add the sautéed vegetables to the beans along with oats, breadcrumbs, tomato paste, soy sauce, and all spices. Mix thoroughly until well combined.
Form patties: Let mixture rest for 10 minutes to absorb moisture. Form into 4 equal patties, about 3/4 inch thick. Refrigerate for 15 minutes to firm up.
Cook patties: Heat remaining olive oil in a large skillet over medium heat. Cook patties for 4-5 minutes per side until golden brown and heated through.
Assemble: Toast buns lightly. Place patties on buns and top with lettuce, tomato, red onion, pickles, and desired condiments.
Serve: Serve immediately with sweet potato fries or your favorite side dish.Retry