The knife makes a soft tap against the chopsticks, then stops before it reaches the cutting board. That little pause is what keeps each sweet potato in one piece while the thin slices spread into a fan in the oven. I like making Hasselback sweet potatoes when a plain baked potato feels a bit too ordinary, but I still want the ingredient list short and the prep uncomplicated.
The slices roast at the edges while the middle stays soft and tender. Since they’re cut thinly, each potato gets more browned edges than a whole baked sweet potato, and the olive oil helps those edges take on color without drying out the center.
Use potatoes that are close in size, and take a moment to work the oil into the cuts instead of brushing only the tops. The result is a neat row of tender layers with lightly browned edges and simple seasoning in every bite.
Kitchen Note
Don’t stop brushing when the tops look glossy. Work a little olive oil and seasoning into the cuts, too, so the exposed layers don’t bake up dry and bland.
Save these Hasselback sweet potatoes for a simple side with tender centers, browned edges, and a handy chopstick trick for even slices.
Why the 1/8-Inch Slices Matter More Than Extra Oven Time
Hasselback potatoes depend on a balance: the slices need to be thin enough to open and brown, but the potato has to stay connected at the base. Cutting each crosswise slice about 1/8 inch thick gives the layers room to fan apart as they bake. Much thicker slices stay crowded together, so the finished potato has fewer browned edges and more of a solid baked-potato feel.
Adding extra time isn’t a substitute for even slicing. If some cuts are thin and others are thick, the thin edges can get quite dark before the thick sections soften. Keeping the slices consistent gives the potato a better chance of cooking evenly across its length. Medium potatoes that are similar in size also help the four portions finish in the same general window.
The chopsticks or wooden spoon handles are there to limit the depth of each cut. Set one along either side of the potato, then let the knife stop when it reaches them. You still need to pay attention as you cut, especially near the ends, where a narrow potato may not sit as securely between the guides.
Why Medium Sweet Potatoes and Olive Oil Suit This Cut
- Medium sweet potatoes — Similar-sized potatoes are easier to slice and tend to finish around the same time. Choose firm ones with no soft spots, scrub them well, and dry them before cutting. Their skins stay on, helping each potato hold together as the slices open.
- Olive oil — The oil coats the outside and the exposed edges, where it helps the slices brown in the oven. A regular olive oil you enjoy cooking with is a good fit; there’s no need to use a special finishing oil. Brush it into the cuts rather than letting it pool on the parchment.
- Kosher salt — Salt seasons the surface and the cut layers, so spreading it across the potato matters more than leaving it in one spot. Kosher salt is what I use here; different salt types have different crystal sizes, so a direct volume-for-volume swap can make the seasoning stronger or weaker.
- Black pepper — Pepper adds a mild, savory bite that keeps the sweet potato from tasting flat. Freshly ground pepper gives a more pronounced aroma, though ordinary ground black pepper works fine for an easy weeknight side.
How to Slice, Season, and Roast the Sweet Potatoes
Set Up the Oven and Baking Sheet
Heat the oven to 425°F and line a rimmed baking sheet with parchment paper. Get the chopsticks or wooden spoon handles ready before you start cutting; having them in place makes it easier to focus on the knife. Scrub and dry each sweet potato, since damp skin can make the oil harder to spread evenly. Keeping the potatoes whole at this stage also gives you a steady shape to work with.
Cut an Even Fan Without Slicing Through
Place one sweet potato between two chopsticks or wooden spoon handles, then cut crosswise into 1/8-inch slices. Stop about 1/4 inch from the bottom so the base stays intact and the slices remain attached. Work along the full length at a steady pace, keeping the cuts close to the same thickness. If the potato shifts, reposition it before continuing rather than trying to cut while it wobbles.
Oil, Season, and Roast Until Tender
Arrange the potatoes on the prepared baking sheet, brush them with olive oil, and season with kosher salt and black pepper. Work some oil and seasoning into the cuts, where the exposed surfaces can catch both as the layers spread. Bake for 50 to 65 minutes, until a knife pierces the potatoes easily and the edges of the slices are lightly browned. If the potatoes are still firm in the center, give them more time in the oven and check again.
Small Changes That Keep Hasselback Sweet Potatoes Practical
Make a Half Batch for Two
Use two medium sweet potatoes and halve the olive oil, salt, and pepper along with them. Keep the same oven temperature and follow the tenderness and browning cues; the smaller number of potatoes doesn’t change the goal for each one. This gives you two generous side portions without leaving extra cooked potatoes to store.
Leave Out the Black Pepper
For a milder, simpler version, omit the black pepper and keep the rest of the preparation the same. The sweet potatoes will taste a little less savory, while the olive oil and kosher salt still season the cut surfaces. The base recipe is also made without dairy, eggs, or wheat ingredients, so no ingredient replacement is needed for those preferences.
Storage and Reheating
- Refrigerator: Store leftovers in a covered container for 3 to 4 days. The slices soften as they sit, so they won’t have the same crisp edges as freshly baked potatoes.
- Freezer: Freezing isn’t my first choice for this dish. The cooked slices tend to soften further after thawing, and the fan shape won’t look as distinct.
- Reheating: Warm them in a 350°F oven until heated through. A microwave is quick, but it softens the edges instead of bringing back their roasted texture.
Questions That Come Up While Making Hasselback Sweet Potatoes
Hasselback Sweet Potatoes
Ingredients
Equipment
Method
- Heat the oven to 425°F and line a rimmed baking sheet with parchment paper.
- Set each sweet potato between two chopsticks or wooden spoon handles and cut crosswise into 1/8-inch slices, stopping about 1/4 inch from the bottom so the potato stays intact.
- Arrange the potatoes on the baking sheet, brush them with the olive oil, and season with the salt and pepper, working some oil and seasoning into the cuts.
- Bake for 50 to 65 minutes, until the potatoes are tender when pierced with a knife and the edges of the slices are lightly browned.
