Sweet Potato Gratin Recipe (2024)

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Sweet potatoes - we love them baked, cut into sweet potato fries, or topped with marshmallows in a classic casserole. There are so many ways to enjoy this delicious tuber, but you haven't tried everything yet! This sweet potato gratin recipe combines the Hasselback slicing method with a cheesy, garlicky topping to create a new twist on potatoes au gratin. It's a comforting dish that will look beautiful on your holiday table or any time of the year you crave sweet potatoes!

Jump to Recipe

What Are Hasselback Potatoes?

Hasselback potatoes are prepared with a unique slicing method that creates a fan-like shape. It makes an attractive presentation, and it allows the thinly sliced potato to cook up evenly and absorb ingredients. To make Hasselback potatoes, start with a freshly washed potato and make deep slices about 1/8" to 1/4" wide. The key is to stop slicing before you cut all the way through and leave the bottom of the potato uncut. Once all the slices are made, the potato will fan out. Top the potato with seasonings, butter, or cheese and bake it in the oven just like a regular baked potato. Or try our Hasselback sweet potato gratin recipe below!

Why Is it Called a Hasselback Potato?

Hasselback potatoes get their name from a Swedish restaurant called Hasselbacken. The first Hasselback potatoes were introduced at Hasselbacken in the 1940s.

What Does Au Gratin Mean?

When you see au gratin on a menu, it usually means the dish is topped with cheese and bread crumbs, then broiled until it's golden brown. Potatoes au gratin is a popular dish that's made with thinly sliced potatoes, a butter and cream mixture, and a cheesy topping. Our gratin potato recipe is made with sweet potatoes and Manchego cheese for an elevated take on a traditional potatoes au gratin.

What Is Manchego Cheese?

Manchego cheese is a Spanish cheese made from sheep's milk. If you can't locate Manchego, you can subsitute with gouda or mild cheddar cheese.

Make it Vegan

You can make this dish completely vegan with a few substitutions. Use a plant-based butter like Earth Balance instead of the butter. In place of the heavy cream, use unsweetened coconut milk from a can. Skip the cheese topping entirely, or use your favorite melting vegan cheese.

Whether you call them sweet potatoes or yams, you can impress your guests with this unique Hasselback sweet potato dish. Use the Hasselback method to slice sweet potatoes into thin sections that will become crispy as they bake but remain tender on the inside. Try this recipe with a different type of potato like the Japanese sweet potato for a new twist on old traditions.

Recipe by: Ronne Day, WebstaurantStore Food Stylist

Total Time: 120 minutes

Ingredients

3 1/2 pounds (about 10 medium or 7 large) sweet potatoes, peeled
2 Tablespoons unsalted butter, room temperature
1 cup heavy cream
2 Tablespoons garlic, minced
1 Tablespoons mustard seed, toasted
1 Tablespoon prepared horseradish
1 1/2 teaspoons kosher salt
1/2 teaspoon black pepper, freshly ground
1 lemon, juiced
1/2 cup (about 1 ounce) Manchego cheese, finely grated
2 Tablespoons scallions, thinly sliced

Directions

Heat oven to 375°F and position a rack in the center.
Coat 3-quart baking dish with butter.
In medium bowl, combine cream, garlic, mustard seed, horseradish, salt, and pepper.
Cut tapered ends off sweet potatoes and discard. To create a Hasselback cut, thinly slice potatoes crosswise into 1/8" slices, but don't cut all the way through. Leave the bottom of each slice intact. When you are finished slicing, the potato will have a fan-like shape.
Place Hasselback sweet potatoes in baking dish. You can place them side-by-side until the pan is full, or arrange them in a circular pattern (see our image).
Sprinkle potatoes with fresh lemon juice.
Evenly pour cream mixture over potatoes and top with Manchego cheese.
Place baking dish on a rimmed baking sheet and transfer to oven. Bake until golden brown and bubbling, about 1 to 1 1/2 hours.
Remove from oven and allow to cool for 10 minutes. Top with scallions and serve.

This recipe serves about 6 to 8 guests. If you're catering for a large holiday party or high-volume kitchen, try our recipe resizer tool.

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Alternative Thanksgiving MealsThanksgiving is about togetherness, and the food and wine you serve at Thanksgiving dinner should be as well. Whether you’re preparing an entire menu or a few simple side dishes, creating foods that all guests can enjoy is important. Since many traditional Thanksgiving dishes aren’t suitable for guests with alternative diets, consider cooking one of the dishes listed below to create an all-inclusive meal that everyone will be able to enjoy. Click the links below to explore alternatives for thanksgiving dinner: Vegetarian Thanksgiving Dishes Vegan Thanksgiving Dishes Gluten Free Thanksgiving Dishes Dairy Free Thanksgiving Dishes Low Carb Thanksgiving Dishes Thanksgiving Alternatives When preparing Thanksgiving dinner for a crowd, consider the following types of diet restrictions guests may abide by and prepare one of these alternative Thanksgiving dinners. Vegetarian: Pumpkin gnocchi Vegan: Cauliflower steak Gluten-Free: Chipotle-maple glazed turkey Dairy-Free: Deep-fried turkey Low Carb: Spaghetti squash pasta Vegetarian Thanksgiving Menu A vegetarian is someone who does not eat meat, as well as some additional animal products. While some vegetarian diets allow for eating eggs and varieties of butter, many others don’t. If you are unable to confirm your guest’s exact restrictions, simply stick with menu selections full of grains, dairy, legumes, fruits, and vegetables. Check out the following vegetarian Thanksgiving recipes to create the perfect vegetarian Thanksgiving menu! Vegetarian Thanksgiving Appetizers Stuffed mushroom caps Pumpkin soup Spinach and artichoke dip Vegetarian Thanksgiving Side Dishes Winter salad with frisee Vegetable tarte Macaroni and cheese Vegetarian Thanksgiving Entrees Pumpkin gnocchi Pumpkin ravioli Stuffed acorn squash Vegetarian Thanksgiving Desserts Chocolate pear cake with salted caramel Candied kumquat and cheesecake tartlets Brown sugar cinnamon bread pudding Vegan Thanksgiving Menu Vegans refrain from consuming any food products produced by an animal. This means that along with meat, vegans avoid foods like eggs, honey, dairy, and any other animal byproducts. If you plan on preparing vegan Thanksgiving meals, it’s important to stick to dishes rich in plants and grains. Additionally, you’ll have to find alternative sources of plant-based protein, such as nuts, legumes, and beans for your vegan Thanksgiving recipes. Vegan Thanksgiving Appetizers Apple chips Olive tapenade Corn fritters Vegan Thanksgiving Side Dishes Roasted butternut squash Israeli couscous with in-season roasted vegetables Pumpkin or squash vegan bisque Vegan Thanksgiving Main Dish Vegan shepherd’s pie Cauliflower steak Mushroom and lentil loaf Vegan Thanksgiving Desserts Chocolate dipped pear Sweet potato casserole Pumpkin mousse Back to Top Gluten-Free Thanksgiving Some people choose to adopt a gluten-free diet to reduce their intake of grains and carbs, while others must refrain from eating gluten due to gluten intolerance or Celiac disease. Because gluten is not as obvious to detect as meat or dairy, it’s important to be on the lookout for the potential allergen. Sources of gluten that are commonly found during the holidays include pasta, gravy, pie crusts, biscuits, stuffing, cream sauces, beer, salad dressing, and some meat substitutes. To embrace gluten-free cooking and baking methods, consider preparing the following gluten-free Thanksgiving recipes: Gluten-Free Thanksgiving Appetizers Hummus with vegetables or gluten-free crackers Butternut squash soup Gluten-free dinner rolls Gluten-Free Thanksgiving Side Dishes Burrata salad Swiss chard with bacon Twice-baked potatoes topped with sour cream and bacon Gluten-Free Thanksgiving Entrees Green bean and mushroom casserole Grilled leeks with brown butter and spiced hazelnuts Spinach and artichoke dip Gluten-Free Thanksgiving Desserts Buckwheat cherry crumble Pumpkin creme brulee Caramel pecan cheesecake macarons Dairy-Free Thanksgiving Lactose is a sugar found in dairy products such as milk, yogurt, and ice cream. If someone is lactose intolerant, it means that their body has difficulty digesting lactose. Because of this, many lactose-intolerant people must adopt dairy-free diets, or at the very least limit their consumption of dairy by using dairy-free alternatives. Traditional Thanksgiving dishes that may be an issue for lactose-intolerant guests include mashed potatoes, macaroni and cheese, stuffing, frosting, and vegetables cooked in butter. Below are great dairy-free recipe ideas for a dairy-free Thanksgiving: Dairy-Free Thanksgiving Appetizers Pumpkin cornbread Squash and apple salad Pumpkin tarte Dairy-Free Thanksgiving Side Dishes Sweet potato casserole Maple-glazed winter vegetables Pumpkin pasta Dairy-Free Thanksgiving Entrees Pineapple-glazed ham Sheet pan turkey breast Moroccan tagine with lamb and butternut squash Dairy-Free Thanksgiving Desserts Pumpkin spice pudding Chocolate orange torte Apple pie bars Low-Carb Thanksgiving An emerging trend in recent years has been low-carb and keto diets. Because you could be serving guests who are looking to stick to their diet over the holidays, it’s important to identify what foods to avoid when creating your Thanksgiving meal alternatives. Common carbohydrate culprits include dinner rolls, cornbread, macaroni and cheese or other kinds of pasta, anything breaded, gravy, cranberry sauce, and desserts which should be avoided when preparing keto Thanksgiving recipes. When cooking low-carb Thanksgiving recipes, try to create dishes that are high in fat and protein. There may be some differences for guests who are looking for keto Thanksgiving meals versus those who are just following a low-carb diet, so be sure to label all of your alternative Thanksgiving dishes. Low-Carb Thanksgiving Appetizers Pumpkin soup Goat cheese and herb spread Parmesan-crusted fried green beans Low-Carb Thanksgiving Sides Stuffing made with riced cauliflower Almond flour biscuits with compound butter Creamed collard greens Low-Carb Thanksgiving Entrees Cauliflower onion mash with cheddar Brussels sprouts gratin Applewood smoked turkey Low-Carb Thanksgiving Desserts Sugar-free pumpkin pie Cranberry cheesecake with an almond flour crust Cranberry parfait Back to Top Whether you're making a Thanksgiving catering menu or hosting a meal at your restaurant, creating dishes around your guests’ dietary restrictions provides an excellent opportunity to reevaluate old traditions for new Thanksgiving dinner alternatives. Use this time to play around with your favorite recipes and make some new and creative substitutions with these Thanksgiving food alternatives. Your guests will appreciate the added care that went into making their meals, and you may discover a new favorite holiday dish.

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