Step 1

Using the small holes on a cheese grater, shred the sweet potato.

Step 2

Place the sweet potato in a bowl with the drained black beans. Using the back of a fork, mash the beans with the sweet potato.(If preparing at home, the above steps can be done in a food processor with a grater attachment).

Step 3

Once you have a fairly smooth mixture, add the egg and the spices and stir to incorporate.

Step 4

Add the panko and stir to combine with the bean and sweet potato mixture. Set aside for 10 minutes.

Step 5

To form the patties, take about ¼ cup of the mixture and form a ball, pressing the mixture together with your hands. Flatten the ball into a patty about 3/4 inch thick. Set aside and repeat with the rest of the mixture to form 6 patties total.

Step 6

Heat a teaspoon of oil in a skillet. Once hot, add the patties and cook 4-5 minutes on each side until the outside is crisp and the inside is cooked through but still tender. Grill the buns, if desired.

Step 7

To serve, spread spicy mayo on the buns, then layer in the burger patty, avocado, and any other toppings or condiments you enjoy.