Sweet Potato Chips Recipe UK: Crispy, Golden Bites With Perfect Salt Balance

This sweet potato chips recipe UK delivers crispy, golden bites with that perfect salt balance we all crave. 💛 After testing countless batches, I’ve perfected the technique for achieving restaurant-quality texture at home—using just a mandoline, oven, and a few simple ingredients.

The secret lies in thin, even slices and precise baking times to avoid soggy chips.

British sweet potatoes—like the vibrant Beaumont variety—are ideal for this recipe, offering natural sweetness and a firmer texture that crisps beautifully. Whether you’re air-frying, oven-baking, or deep-frying, the goal is the same: shatteringly crisp edges with tender, flavorful centers.

A light coating of oil and flaky sea salt ensures every chip is perfectly seasoned.

What makes these chips stand out is their versatility. Serve them as a crunchy snack, a savory side to soups, or even a sweet treat with cinnamon sugar.

The recipe scales easily, so you can make a single batch for yourself or a large tray for sharing. Trust me—once you try these, store-bought chips won’t compare.

For extra flavor, experiment with smoked paprika, chili powder, or even a sprinkle of parmesan for a savory twist. The key to success? Patience—don’t rush the baking, and always let the chips cool before storing. Now, let’s get crisping!

Ingredients for sweet potato chips recipe uk

British sweet potatoes, avocado oil, and flaky salt—just three essentials for restaurant-quality chips at home.

The Beaumont sweet potatoes are non-negotiable here—their natural sweetness and firm texture create that perfect crisp without burning. Grab them from Waitrose or M&S for the best quality, or any UK supermarket’s organic section if you’re short on time. Avoid anything mealy or soft-spotted; they should feel heavy for their size and have smooth, unblemished skin. For extra crispiness, let them sit at room temperature for 30 minutes before slicing—this helps the moisture evaporate faster during baking. If you’re feeling fancy, a quick scrub with a vegetable brush removes any stubborn dirt without damaging the skin.

No avocado oil? Sunflower or vegetable oil works in a pinch, but avocado’s high smoke point means fewer burnt chips. The flaky sea salt is where magic happens—Diamond Crystal melts beautifully, but any flaky variety will do. Running short on time? Skip the optional seasonings (cinnamon sugar, smoked paprika) and just go for the classic salted version—it’s still unbeatable. For the herb variation, dried rosemary works at half the amount, but fresh gives that bright, aromatic punch. And if you don’t have a mandoline, a sharp chef’s knife and steady hands will get you close—just aim for even slices around 1mm thick.

These chips are best eaten fresh, but if you must store them, let them cool completely first. Spread them on a wire rack in a single layer, then transfer to an airtight container with a piece of bread to absorb moisture—keeps them crisp for 3-4 days. For freezing, portion them onto a tray, freeze until solid, then transfer to a bag. Re-crisp at 350°F for 5-7 minutes—they’ll taste almost as good as day one. Pro tip: If the chips soften when reheating, pop them back in the oven for another minute or two. And whatever you do, don’t stack them in the container—they’ll turn to mush overnight.

Step-by-step instructions for perfect sweet potato chips

Here's how to achieve that ideal crispy texture with a perfect salt balance every time.

Start by peeling the 2 large Beaumont Sweet Potatoes using a vegetable peeler. I like to work with organic potatoes—they're less likely to have tough skin that affects slicing. Cut them into 1-inch thick rounds first, then slice each round into 1mm thick strips using the mandoline slicer. This even thickness is crucial for consistent crispiness.

As you slice, arrange the strips in a single layer on paper towels to remove excess moisture. This drying step prevents soggy chips. Let them sit for 30-45 minutes while you prepare the seasoning mix. You'll know they're ready when the edges feel slightly dry to the touch.

In a small bowl, combine the 2 tbsp flaky sea salt with the 2 tbsp cinnamon sugar mix (if using sweet version), 1 tbsp smoked paprika (for savory), and 1 tbsp cornstarch. The cornstarch helps create that extra crispy texture we're after. Add the chopped fresh rosemary if you're making the herb variation—just 1 tbsp is plenty to add aroma without overpowering.

Mix everything thoroughly with your fingers until the salt and spices are evenly distributed. The flaky sea salt will melt slightly from your body heat, creating those perfect little salt crystals that stick to the chips. Keep this mixture nearby—you'll use it immediately after the chips come out of the oven.

Preheat your oven to 275°F—this lower temperature is key for achieving crispiness without burning. Line the baking sheet with parchment paper and arrange the sweet potato strips in a single layer, leaving ½ inch between each piece. They'll expand as they cook, so don't overcrowd.

Lightly brush both sides of each chip with the 0.25 cup avocado oil using a pastry brush. The high smoke point of avocado oil ensures it won't burn while creating that golden color. Bake for 45-50 minutes, flipping the chips halfway through at the 22-25 minute mark. You'll know they're ready when the edges are deep golden brown and they're crispy to the touch.

Remove the chips from the oven and immediately transfer them to a large bowl. While still warm, add the seasoning blend and toss gently but thoroughly. The residual heat from the chips will help the seasoning stick perfectly. Here's the thing—don't let them cool completely before seasoning, or you'll lose that crispy texture.

Let the chips cool for 5-10 minutes on the baking sheet (they'll continue crisping slightly) before serving. The contrast of warm, crispy chips with cool seasoning is what makes them irresistible. For maximum crispiness, serve immediately—these chips lose their perfect texture as they sit.

Best sauces and condiments for this sweet potato chips recipe uk

Classic Salted Perfection

Start with the simplest, most reliable pairing: flaky sea salt—preferably Diamond Crystal—tossed over warm chips. The heat melts the salt just enough to create those perfect little crystals that cling to every crispy edge.

I like to use 2 tbsp of salt per batch, but adjust to taste. For a more refined touch, try Maldon salt—it’s a British favorite that dissolves beautifully. 🧂

Sweet Heat Combo

For a dessert-like twist, mix 2 tbsp cinnamon sugar with 1 tbsp smoked paprika before tossing with the chips. The cinnamon adds warmth while the paprika brings a subtle smokiness that balances the sweetness.

I’ve tested this with both Beaumont sweet potatoes and regular sweet potatoes, and the flavor works beautifully in both. Serve these with vanilla ice cream for a fun snack or alongside apple slices for a light dessert.

Herb-Infused Elegance

Fresh rosemary transforms these chips into something restaurant-worthy. Finely chop 1 tbsp of fresh rosemary and mix it with 1 tbsp flaky salt and 1 tsp black pepper. The rosemary’s piney aroma pairs perfectly with the natural sweetness of the potatoes.

For an extra touch, drizzle with a few drops of lemon zest after seasoning—it brightens the whole dish. This variation is ideal for serving with charcuterie boards or as a side to roasted meats.

Spicy Kick Variations

If you love heat, try mixing 1 tbsp smoked paprika with ½ tbsp cayenne pepper and 1 tbsp flaky salt. For a milder kick, reduce the cayenne to ¼ tbsp and add ½ tsp garlic powder for depth.

I’ve even experimented with chili-lime salt—just mix 1 tbsp flaky salt with 1 tsp lime zest and ½ tsp chili powder. These spicy chips are fantastic with guacamole or sour cream for dipping. 🌶️

Cheesy Twist

For a savory, umami-packed option, sprinkle 2 tbsp grated parmesan cheese over the warm chips along with 1 tbsp flaky salt. The parmesan adds a salty, nutty flavor that pairs surprisingly well with the sweetness of the potatoes.

Let the chips cool for just 2-3 minutes before serving—this gives the parmesan time to slightly melt and cling to the chips. This variation is a crowd-pleaser, especially with marinara sauce for dipping.

Dipping Sauces

No chips are complete without a dip!

Try homemade sriracha mayo (mix 2 tbsp mayo with 1 tbsp sriracha and a pinch of sugar), spicy ketchup (simmer ½ cup ketchup with 1 tsp chili flakes and 1 tsp vinegar), or whipped honey butter (whip 2 tbsp softened butter with 1 tbsp honey and a pinch of salt).

For something creamy, blend ½ cup Greek yogurt with 1 tsp garlic powder and 1 tbsp lemon juice. These dips elevate the chips from snack to full-on meal. ✨

Frequently asked questions