Thai Red Curry Sweet Potato Burgers with Coconut-Peanut Sauce
Oven-roasted sweet potato and chickpeas are mashed with red curry paste, Thai basil, ginger and lime, then baked into sturdy, lightly crisp patties. Piled on toasted buns with a creamy coconut-peanut sauce and crunchy cucumber and carrot, they are sweet, spicy and fresh.
Steps
Before you start
- Shake the can of coconut milk well before opening so the cream and liquid are blended.
- Check your red curry paste: brands vary a lot in heat. Use 2 tablespoons for mild and 3 for medium-spicy.
- Plan on about 2½ hours in total. The chilling step is essential, because the patties will be too soft to shape and flip without it.
- Have two large rimmed baking sheets and parchment paper ready.
Roast the sweet potatoesOven 425°F / 220°C
- Position a rack in the center of the oven and heat to 425°F (220°C).
- Toss the sweet potato cubes with 1 tablespoon (15 ml) of the oil on a large rimmed baking sheet and spread in a single layer with space between the pieces.
- Roast for 25 minutes, stirring once halfway, until the cubes are completely tender, the edges are browned in spots and a knife slides in with no resistance.
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Ready when: Cubes are very tender with browned edges and look slightly wrinkled
Tip: Don't crowd the pan. Steamed sweet potatoes hold too much water and make soft patties.
Cool the potatoes
- Leave the sweet potatoes on the pan for 15 minutes so steam escapes.
- Leave the oven on.
- Slide the potatoes into a large mixing bowl once they are just warm, not hot.
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Ready when: Potatoes are warm to the touch but no longer steaming
Tip: Hot potatoes would start to cook the chickpea flour and make the mix gummy.
Prep the flavorings
- While the potatoes cool, finely chop the Thai basil, thinly slice the scallions, grate the garlic and ginger, and zest the lime (about 1 teaspoon).
- Squeeze the zested lime and measure 2 tablespoons (30 ml) of juice: 1 tablespoon goes in the patties and 1 tablespoon in the sauce.
- Pat the rinsed chickpeas very dry with a clean towel.
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Ready when: Herbs are finely chopped and chickpeas feel dry to the touch
Tip: Dry chickpeas mash into a thick paste instead of a watery one.
Mash the burger base
- Add the chickpeas to the bowl with the sweet potatoes.
- Mash with a potato masher until mostly smooth but with some chickpea pieces still visible, about 2 minutes.
- Stir in the curry paste, 3 tablespoons (45 ml) coconut milk, basil, scallions, garlic, ginger, lime zest, 1 tablespoon lime juice, 1 tablespoon soy sauce and the salt until evenly orange-red.
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Ready when: Mixture is evenly colored with no streaks of curry paste
Tip: Leave a few chunks of chickpea for texture; over-mashing gives a baby-food consistency.
Add flour and chill
- Stir in the chickpea flour and panko until no dry spots remain.
- The mixture will be soft and slightly sticky.
- Cover the bowl and refrigerate for 30 minutes so the flour hydrates and the mixture firms up.
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Ready when: Mixture holds its shape when pressed into a ball
Tip: If it still feels very wet after chilling, stir in 1 more tablespoon of chickpea flour.
Make the sauce
- In a small bowl, whisk the peanut butter, 3 tablespoons (45 ml) coconut milk, 1 tablespoon lime juice, maple syrup, 1 teaspoon soy sauce and sriracha (if using) until smooth and pourable like thick cream.
- If it is too thick, whisk in warm water 1 teaspoon at a time.
- Taste and add more lime or sriracha if you like.
- Refrigerate until serving.
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Ready when: Sauce is smooth and drizzles off the whisk in a ribbon
Tip: Cold peanut butter clumps; bring it to room temperature first so the sauce whisks smooth.
Shape the patties
- Line two large baking sheets with parchment and brush each with ½ tablespoon of the remaining oil.
- With wet hands, divide the mixture into 6 portions of about 175 g (⅔ cup) each.
- Pat each into a patty about 4 inches (10 cm) wide and ¾ inch (2 cm) thick and set 3 on each sheet, leaving space between them.
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Ready when: Patties are even in thickness and hold together when lifted
Tip: Re-wet your hands often; the mixture sticks to dry hands.
Bake the first sideOven 425°F / 220°C
- Bake the patties at 425°F (220°C) for 15 minutes, with one sheet on the center rack and the other on the upper rack; swap their positions halfway through for even browning.
- The tops should look set and dry and the undersides lightly browned.
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Ready when: Tops look dry and the edges lift easily from the parchment
Tip: Don't flip early. Patties that release easily from the parchment are ready.
Flip and finishOven 425°F / 220°C
- Slide a wide spatula fully under each patty and flip gently.
- Bake another 13 minutes at 425°F (220°C), until both sides are browned and crisp at the edges and the centers feel firm when pressed.
- Let the patties rest on the pan for 5 minutes while you prepare the buns.
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Ready when: Deep golden-orange crust, firm to the touch, slightly springy in the center
Tip: They firm up more as they cool, so resting prevents breakage when you build the burgers.
Toast buns and assemble
- Heat a large skillet over medium heat and toast the cut sides of the buns for 1–2 minutes until golden.
- Spread the bottom buns with a spoonful of sauce, then layer a lettuce leaf, a patty, grated carrot, cucumber ribbons and cilantro.
- Drizzle with more sauce, add the top bun and serve right away.
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Ready when: Bun cut sides are golden brown
Tip: The lettuce leaf acts as a barrier so the bottom bun doesn't get soggy.
Good to know
Tips
- Roast the potatoes until the edges brown. This drives off moisture, which is the key to patties that hold together.
- Check your curry paste label: some brands contain shrimp paste. Choose a vegan paste if you need these to be fully vegan.
- Use a wide, thin spatula and flip patties in one confident motion; they are tender until they cool.
- For extra crunch, broil the finished patties 1–2 minutes on high, watching closely so the curry paste doesn't burn.
Make ahead
Shape the patties up to 1 day ahead, place on parchment-lined sheets, cover tightly and refrigerate; add 2–3 minutes to the first bake. The sauce keeps for 3 days in the refrigerator.
Storage & reheating
Cooked patties keep in an airtight container in the refrigerator for up to 4 days, with parchment between layers. Don't leave them at room temperature more than 2 hours. Freeze cooled patties on a tray, then bag them, for up to 3 months. Reheat from the fridge or frozen on a baking sheet at 375°F (190°C) for 12–15 minutes (about 20 minutes from frozen), flipping once, until hot throughout and crisp. Store sauce separately in the refrigerator for up to 3 days.
Substitutions
- chickpea flour (besan) → Oat flour or all-purpose flour, same amount. Patties will be slightly softer; use oat flour and gluten-free panko for a gluten-free version.
- panko breadcrumbs → Gluten-free panko or rolled oats pulsed briefly. Use the same weight; oats give a slightly denser patty.
- creamy peanut butter → Almond butter or sunflower seed butter. Use the same amount; the flavor is a bit milder. Sunflower butter is nut-free.
- fresh Thai basil leaves (or sweet basil) → Sweet Italian basil with a few mint leaves. You'll lose some of the anise note, but the patties will still taste fresh and herby.
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- Meal
- Dinner
- Cuisine
- Thai
- Main ingredient
- ChickpeasSweet Potatoes
- Diet
- VegetarianHalal
- Quick & Easy
- Make Ahead

