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Sweet Potato Avocado Burger

This sweet potato avocado burger offers a vibrant, nutrient-dense alternative to traditional barbecue fare. Combining the natural sweetness of roasted potatoes with earthy chickpeas and crunchy walnuts, these patties provide a satisfying texture that holds together beautifully in the frying pan. The addition of flaxseed meal and rolled oats ensures a fibre-rich base, while the tamari and Worcestershire sauce add a deep savoury depth known as umami.

Perfect for those seeking a balanced nutrition profile, these homemade veggie burgers are as wholesome as they are delicious. Serve them on toasted whole-wheat buns piled high with creamy avocado slices, crisp kale, and a sharp hit of Dijon mustard for a sophisticated lunch or dinner. This recipe is easily adapted for vegan diets by simply omitting the Worcestershire sauce and using plant-based mayonnaise.

Continue reading below

Ingredients for Sweet Potato Avocado Burger

  • 900g sweet potatoes

  • 2 tablespoons extra-virgin olive oil

  • 1 tablespoon granulated garlic powder

  • 2 tablespoons reduced-sodium tamari soy sauce

  • 45ml Worcestershire sauce (omit for vegan)

  • 1/4 yellow onion, roughly chopped

  • 240ml chickpeas (garbanzo beans), rinsed and drained

  • 110g organic rolled oats

  • 70g raw walnuts, crushed

  • 180ml flaxseed meal

  • 2 tablespoons unrefined coconut oil

  • Whole-wheat or gluten-free buns

  • 2 ripe avocados, thinly sliced (2 to 3 slices per burger)

  • 1 teaspoon Worcestershire sauce (per burger

  • omit for vegan)

  • 1/4 red onion, thinly sliced

  • 1 to 2 torn lacinato kale leaves per burger

  • Dijon mustard

  • Olive oil mayonnaise (omit for vegan)

How to make Sweet Potato Avocado Burger

Wash and pat your sweet potatoes dry. Cut the sweet potatoes into small 1-inch cubes. Roast the sweet potato cubes with 2 tablespoons extra-virgin olive oil, 1 tablespoon granulated garlic powder, and 1/2 teaspoons salt. Place onto a sheet tray and roast at 191°C for approximately 40 minutes, remove from the oven, and cool slightly.

In a food processor, add the roasted/cooked sweet potato, tamari soy sauce, and Worcestershire sauce; pulse to combine. Add the onion and chickpeas and pulse until fully combined, periodically stopping the food processor and using a spatula or wooden spoon to move the mixture around. Mix just until the chickpeas and onion are fully incorporated; look for the consistency of mashed potatoes. Do not overmix.

Meanwhile, in a large bowl, combine the oats, walnuts, chia seeds, and flaxseed meal.

Remove the sweet potato mixture from the food processor and fold into the dry ingredients. Measure out 80ml the mixture at a time and, using your hands, form into round burger-shaped patties.

In a medium sauté pan, heat the coconut oil over medium heat. Add the patties and sauté for about 4 minutes per side, or until they are warmed through and golden brown on each side.

To serve, place the patties on toasted buns, if desired, and add your choice of toppings. I love avocado, kale, and Worcestershire sauce.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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