Savory hasselback sweet potatoes featuring creamy, buttery insides, crispy skins, and loads of flavor from garlic and sage. These are simple, stunning and so dang satisfying.

hasselback sweet potatoes topped with an herby garlic mixture in a cast-iron skillet

Why I Love this Recipe 

Many sweet potato side dish recipes lean sweet. I love that this recipe for hasselback sweet potatoes keeps things savory and wintery. Butter, garlic, salt and a winter herb makes for a simple yet winning flavor combo. 

Aside from the savoriness and simplicity, I also love the presentation. The hasselback technique is just stunning. It looks super fancy but in reality it’s very simple and cooks the sweet potatoes quickly.

Ingredients in this Hasselback Sweet Potato Recipe

  • Fresh winter herb such as sage. Fresh sage is so delicious here but thyme or rosemary are also spectacular. Use what you like or already have on hand. Due to the high baking temperature, I do not recommend using dried herbs.
  • Olive oil and butter. Olive oil is used to coat the skillet and start the cooking process while butter is added for flavor.
  • Sweet potatoes are the star of the show here. Look for medium sweet potatoes that are fairly similar in portions and not overly bulbus. 
  • Fresh garlic gets mixed with melted butter and spooned over the sweet potatoes. 
  • Nutmeg pairs beautifully with the butter and sweet potatoes. Freshly grated with a microplane is ideal, but pre ground also works! 
  • Shallots are optional but add a nice depth of flavor and even more visual interest.
hasselback sweet potatoes topped with an herby garlic mixture in a cast-iron skillet

How to Make Hasselback Sweet Potatoes

Before anything else, place a cast-iron skillet in the oven while it preheats. Using a preheated skillet means the potatoes start cooking the moment they hit the pan.

Wash and scrub the sweet potatoes then dry them well. Make sure they are dried well so the exterior can get crisp. 

Cut the sweet potatoes in half lengthwise. Place the sweet potato halves, cut side down, on a cutting board. Arrange two wooden skewers or chop sticks along the length of the sweet potato and then cut ⅛-inch thick slices, crosswise, about 80% through the potato. The most important thing is to not cut all the way through the potato, you want the slices to be able to fan out once cooked but still have a solid base that holds them all together. 

Transfer the sliced potatoes to the preheated and oiled cast-iron skillet. Drizzle each potato with a bit of oil and season with salt and pepper. Bake for 30 minutes. 

Meanwhile, melt the butter in a small saucepan over medium-low heat. Stir in the garlic, salt and nutmeg and cook briefly. Remove the saucepan from heat and stir in the sage. 

Remove the sweet potatoes from the oven, separate the slices with a knife for fork, then spoon the butter mixture over top. Continue baking 10 minutes.

An optional, but recommended step, is to broil the potatoes at the end of cooking. This crisps the skins and adds a bit of color (aka flavor). 

hasselback sweet potatoes topped with an herby garlic mixture in a cast-iron skillet

Tips for Cutting Sweet Potatoes Hasselback-Style

  1. Cut the potatoes in half lengthwise first. This gives you a flat edge to work with which means you won’t be dealing with a rolling potatoes. And it makes for a shorter cooking time.
  2. Use “bumpers.” Similar to bumpers used in bowling, I recommend using wooden skewers or wooden spoon handles set along the length of the sweet potato to keep the knife from cutting all the way through the potato. 
  3. Use a very sharp chef’s knife, the sharper your knife, the easier the task will be. Avoid using a small paring knife or serrated knife.
  4. Carefully transfer the cut sweet potatoes to the cast-iron skillet using a spatula. Depending on how deep the slices are, this will keep the potatoes from falling apart. But if they do fall apart, it’s no problem, just sandwich them back together, they’ll cook the same.

Check out this video tutorial that demonstrates how to cut a hasselback potato.

FAQs & Test Kitchen Tips

I don’t have a cast iron skillet, can I use a baking sheet?

You can absolutely use a baking sheet instead. I would recommend lining the baking sheet with parchment paper (instead of the tablespoon of oil) and do not preheat the baking sheet like is called for with the cast-iron skillet.

Can I add some sweetness?

If you would like these to be sweet and salty, I recommend adding a tablespoon or two of pure maple syrup to the melted butter mixture.

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hasselback sweet potatoes topped with an herby garlic mixture in a cast-iron skillet

Savory Hasselback Sweet Potatoes with Sage & Garlic

  • Author: Lauren Grant
  • Prep Time: 10 minutes
  • Cook Time: 40 minutes
  • Total Time: 50 minutes
  • Yield: 4 servings 1x
  • Category: Side dish
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free

Description

 

Savory hasselback sweet potatoes featuring creamy, buttery insides, crispy skins, and loads of flavor from garlic and sage. These are simple, stunning and so dang satisfying.


Ingredients

Scale
  • 1 tablespoon + 2 teaspoons olive oil
  • 2 medium sweet potatoes (about 1012 ounces each)
  • Kosher salt and black pepper
  • 2 tablespoons unsalted butter
  • 3 garlic cloves, chopped
  • ½ teaspoon nutmeg
  • 2 tablespoons finely chopped sage*
  • 1 shallot, thinly sliced, optional

Instructions

  1. Heat oven to 425ºF with rack set in middle position; place a large cast-iron skillet on middle rack while oven preheats.
  2. Wash and thoroughly dry potatoes.
  3. Cut potatoes in half lengthwise then place cut side down on a cutting board. Working with one half at a time, arrange wood skewers or chopsticks along length of potato half. Cut ⅛-inch slices crosswise (top to bottom) nearly all the way through the potato (about 80% of the way through), stopping before you cut through the bottom (the wood skewers should act like bumpers and keep your knife from slicing all the way through).
    hands slicing sweet potatoes in hasselback technique
  4. Carefully remove skillet from oven and drizzle 1 tablespoon oil in pan; swirl to coat. Gently arrange sweet potato halves, cut side down, in a single layer; drizzle ½ teaspoon oil over each potato half and sprinkle with salt and pepper.
  5. Return skillet to oven and back sweet potatoes 30 minutes.
    hasselback sweet potato halves in a cast iron skillet
  6. Meanwhile, melt butter in a small saucepan over medium-low heat; stir in 1 teaspoon salt, garlic, and nutmeg. Cook until fragrant and bubbly, about 30 seconds. Off heat, stir in sage.
  7. Remove sweet potatoes from oven and separate slices using a fork or knife. Fit a few slices of shallot between sweet potato slices (3 or 4 per potato); spoon butter mixture evenly over potatoes.
    hasselback sweet potatoes topped with an herby garlic mixture in a cast-iron skillet
  8. Return skillet to oven and back potatoes 10 minutes more. Turn oven to broil and broil potatoes 2–4 minutes, until edges are crispy and charred.
    hasselback sweet potatoes topped with an herby garlic mixture in a cast-iron skillet


Notes

A 12-inch cast-iron skillet is ideal for this recipe. A 10-inch will work (it’s what I have) but you may need to trim some of the potato ends to get them to all fit in the pan.

* Thyme or rosemary would be great substitutions or additions to the sage.

Keywords: Hasselback sweet potato recipe, Hasselback sweet potato

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About The Author

Lauren Grant is a professional culinary food scientist, food writer, recipe developer, and food photographer. Lauren is a previous magazine editor and test kitchen developer and has had work published in major national publications including Diabetic Living Magazine, Midwest Living Magazine, Cuisine at Home Magazine, EatingWell.com, AmericasTestKitchen.com, and more.

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  1. I didn’t think I would like this but I actually prefer this over a really sweet baked potatoes

    1. Hi Joyce, I’m so glad to hear you enjoyed these! I agree about the savoriness, I prefer these over sweet-sweet potatoes!