What's our secret to a tasty black bean burger? The slow cooker. Slow cook the beans in broth kicked up with smoky bacon and sauted aromatics, then use them to make these hearty black bean burgers topped with a spicy, smoky sauce. You can easily make the burgers vegetarian by omitting the bacon and swapping the chicken broth for vegetable when slow cooking the beans. Weve paired this flavorful burger patty with comeback sauce. This mayonnaise-based sauce hails from mississippi, but southerners all across the deep south love the spicy kick it gives to a plethora of fried, grilled, and steamed foods.