Sweet Potato Black Bean Burger

Ingredients

• 500 gsweet potatoes, washed and scrubbed
• 1 can (400 g)black beans, rinsed and drained
• 1 mediumonion, finely diced
• 2 teaspoonsginger-garlic paste
• 5–6green chillies, finely chopped
• 1 handfulfresh coriander leaves, chopped
• ½ teaspoonturmeric powder
• 1 teaspooncumin powder
• 1 teaspooncoriander powder
• ½ teaspoonred chilli powder
• 1 teaspoongaram masala
• 1 tablespoonolive oil or ghee
• 68 g (¾ cup)oats, coarsely ground
• to tastesalt
• as neededoil for pan-frying

Instructions

1. 1

   Cook the potatoes

   Bake, boil or steam the sweet potatoes with their skins on until cooked through. For roasting, heat the oven to 200°C, halve the potatoes horizontally, rub them with olive oil and place them cut-side down on a lined baking tray. Roast for about 30 minutes, until soft. To boil, cover them with water in a large pot and cook until tender; alternatively, pressure-cook with the skins on for 2–3 whistles. To steam, bring water to the boil in a large pot, set a steamer colander over it, add the potatoes and cover. Steam for 30–45 minutes, depending on their thickness, until a knife slides in without resistance. Lift them out with tongs and leave to rest for 5 minutes. Peel while still warm and put the flesh in a large mixing bowl.

2. 2

   Drain the beans

   Rinse and drain the black beans in a colander, then leave them there while you prepare the remaining ingredients so excess water can drain away.

3. 3

   Mix the patties

   Roughly mash the sweet potato with a fork or potato masher. Add the diced onion, green chillies, coriander leaves, ginger-garlic paste and spice powders. Stir in the drained black beans and salt, then mix thoroughly. Add the ground oats gradually until the mixture is no longer too wet and holds together when shaped. Cover and refrigerate for 15–20 minutes to let the oats absorb moisture.

4. 4

   Shape the patties

   Divide the mixture into 6 equal portions for standard burger buns, or make more portions for sliders; a measuring cup can help keep them even. Lightly wet your hands with water or oil and shape each portion into a disc the size of your bun. Put the patties on a greased tray and freeze for 20 minutes, or until firm to the touch.

5. 5

   Pan-fry the patties

   Heat 2–3 tablespoons of olive oil in a thick-bottomed pan. Add 2 or 3 patties and cook over a low to medium heat for 4–5 minutes. Tilt the pan and spoon some of the oil over the tops; wait until the patties are firm enough to turn before flipping. Cook the other side for a further 5 minutes, until firm outside and tender inside. Add more oil if needed before cooking the remaining patties. Keep any uncooked patties in the freezer until fully frozen before packing them in a zip-lock bag for later.

6. 6

   Assemble and serve

   Lift the patties from the pan, assemble the burgers and serve immediately.

What is a sweet potato black bean burger?

A veggie burger replaces a meat patty with a mixture of vegetables and other filling ingredients. This American-style burger takes its substance from sweet potato, black beans and oats.

The sweet potato keeps the middle tender, while beans and oats help the mixture hold together. Indian spices, green chillies and coriander give this version its distinctive flavour.

Nutrition and macros by portion

The nutrition label shows one serving as written: 249 calories, 8g protein, 38g carbs, 7g fat.

The sweet potato and oats provide most of the carbohydrates, while black beans contribute protein and some carbohydrate. Olive oil or ghee and the oil used for frying supply most of the fat. Serve a patty with salad or vegetables alongside for a more balanced plate.

Cooking the sweet potatoes

Roasting: The recipe offers roasting, boiling or steaming as options. Whichever method you use, cook the potatoes until a knife enters easily before peeling them while warm.

Moisture: Well-drained beans and a short rest for the mixture help keep the patties shapeable. Add the ground oats a little at a time, stopping once the mixture holds together.

Building the flavour

Spices: Turmeric, cumin, coriander, red chilli and garam masala season the sweet potato and beans throughout. Adjust the amount of fresh green chilli to suit your preference.

Freshness: Chopped coriander and ginger-garlic paste bring aromatic flavour to the mixture. Mix them in thoroughly so each portion is seasoned.

Getting a firm patty

Chilling: Refrigerate the mixture for 15–20 minutes so the oats can take up some moisture. After shaping, freeze the discs for 20 minutes, until firm to the touch.

Turning: Let each patty cook for 4–5 minutes before trying to flip it. Spoon oil over the top as it cooks, and turn it carefully once it feels firm enough.

Cooking in batches

Pan space: Cook 2 or 3 patties at a time in a thick-bottomed pan. Add more oil before the next batch if the pan needs it.

Doneness: The patties should be firm on the outside and tender in the centre after about 5 minutes on the second side. Handle them gently when moving them from the pan.

Serving the burgers

Buns: Serve the patties in burger buns as soon as they come out of the pan. Their tender texture pairs well with crisp salad or sliced vegetables.

Sides: Add a green salad or roasted vegetables for a fuller plate. Keep toppings simple so the spiced patty remains the focus.

Recipe notes & tips

• Let the rinsed beans drain while you prepare the other ingredients.
• Add the ground oats gradually so the mixture does not become too dry.
• Wet or oil your hands lightly to make shaping easier.
• Freeze the shaped patties until firm before frying to make them easier to handle.
• Cook in batches of 2 or 3 so there is room to turn each patty carefully.
• Freeze extra patties fully before storing them in a zip-lock bag.

Variations

• Milder chilli: Use fewer green chillies for a gentler heat.
• Slider patties: Divide the mixture into more portions for smaller buns.
• Ghee: Replace the tablespoon of olive oil in the mixture with ghee.
• Alternative oil: Use olive oil mixed with sunflower oil for pan-frying.
• Boiled potatoes: Boil the sweet potatoes until tender instead of roasting them.
• Steamed potatoes: Steam them until a knife passes through without resistance.

Common mistakes to avoid

• Wet beans: Poorly drained beans can make the mixture too loose; leave them in the colander while preparing the other ingredients.
• Too much oat at once: The mixture can become dry; add the ground oats gradually and stop when it holds its shape.
• Skipping the chill: Soft patties are harder to handle; refrigerate the mixture and freeze the shaped discs as directed.
• Flipping too early: A patty may break apart before it firms up; wait 4–5 minutes and turn it carefully.
• Crowded pan: Patties are harder to handle when packed together; cook just 2 or 3 at a time.

How to store

Freeze uncooked patties until fully frozen, then pack them in a zip-lock bag for later use. The recipe does not specify a storage time or reheating method for cooked patties.

Frequently asked questions