Hasselback is a term for potatoes, or any vegetable, sliced into a fan-like shape. Hasselback is made by slicing a vegetable, usually a potato or sweet potatoes, into thin slices, but not going all the way through. The slices remain attached, but the top of the potato opens up like a fan. This offers plenty of space to add seasonings like the honey butter sauce in this recipe. You can make hasselback potatoes as an appetizer with baby potatoes, or as a side dish with larger potatoes.