
Sweet potatoes have a natural sweetness that makes them a surprisingly tricky ingredient to work with when you're avoiding added sweeteners — many packaged chips and snack recipes sneak in honey or syrup to amplify that flavor. Here, the sweetness comes entirely from the vegetable itself, balanced beautifully by fragrant rosemary and a warm hint of ground ginger. Coconut oil does the heavy lifting in the crisping department, coating each paper-thin round so it bakes up golden and satisfying rather than soft or greasy. The key is slicing as uniformly as possible — a mandoline makes this almost effortless — because even thickness is what separates truly crispy chips from a chewy, uneven batch. A single layer on the baking sheet and a mid-bake flip are the only techniques standing between you and a seriously addictive snack. Let them cool on a rack before diving in, because they firm up even more as they rest and the texture becomes genuinely crunchy. These are the kind of homemade chips that disappear fast, so consider making a double batch.
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Preheat the oven to 375°F (190°C). Line two large baking sheets with parchment paper and set a wire cooling rack over one of them if you have a second rack available.
Using a mandoline set to 1/16-inch thickness, or a very sharp knife, slice the sweet potatoes into rounds as uniformly thin as possible. Uniform thickness is the single most important factor for even crisping — thicker slices will stay chewy while thinner ones burn.
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