Scalloped Sweet Potatoes

Averie Sunshine
5 from 3 votes
Published: Nov 05, 2025
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Scalloped Sweet Potatoes 🍠🍁🧀 with garlic and herbs, Parmesan cheese, and cream is the perfect sweet-yet-savory side dish that everyone raves about! An easy yet elegant sweet potato recipe that’s perfect all fall, for Thanksgiving, Christmas, or holiday entertaining!

A baked sweet potato gratin in a round white dish, topped with melted cheese and garnished with chopped herbs.

Easy Scalloped Sweet Potatoes Recipe

  • If you’re looking to put an elegant twist on the humble sweet potato, this scalloped sweet potato recipe is just the ticket. It’s easy enough to master, yet looks like you labored for hours over it!
  • Thinly sliced sweet potatoes are arranged in a baking dish and topped with a mixture of heavy cream, melted butter, garlic, fresh herbs, and Parmesan.
  • This saucy blend helps to keep the sweet potatoes moist while baking and infuses savory flavor into natural sweetness of the sweet potatoes so it reads as an overall savory dish.
  • Everyone at your Thanksgiving Day, Christmas, or holiday celebration is going to want the recipe! You can also prep this the night before and bake it off to help take stress off your plate if you’re serving this for a special meal.
  • For those of you who love traditional butter pecan sweet potato casserole, sweet potato casserole with marshmallows, or candied yams, you’re going to adore this sweet potato dish.
A plate of food on a plate.
A white baking dish filled with a baked sweet potato casserole, thinly sliced and topped with herbs, on a light countertop.

Ingredients In Scalloped Sweet Potato Recipe

  • Sweet potatoes are the star of the show. Use 3 medium sweet potatoes, or about 2 large. Aim for about 1 1/2 pounds of sweet potatoes. Select potatoes with the same general size so that the slices are uniform in overall size which makes for a prettier presentation and ensures they cook through at a uniform rate.
  • Heavy cream + cornstarch help thicken the sauce.
  • Melted butter, garlic, shallot, salt, pepper, thyme, and sage add savory flavor.
  • Parmesan cheese elevates the overall flavor of the dish. If for some reason you wanted to omit it, you could. But I wouldn’t because it adds an extra wow factor!
  • Fresh parsley, fresh thyme, or other fresh herbs such as rosemary are used for garnishing, as desired.

Note: Scroll down to the recipe card section of the post for the ingredients with amounts included and for more complete directions.

Three raw sweet potatoes surrounded by small bowls containing chopped herbs, minced garlic, chopped onion, grated cheese, spices, butter, and a small pitcher of cream on a white surface.
A baked sweet potato gratin in a white round dish, featuring thinly sliced sweet potatoes arranged in overlapping layers, garnished with herbs.

Using Other Potatoes

If you want to make this dish with Russet potatoes or Yukon gold potatoes, you can. I also have a recipe for Three Cheese Scalloped Potatoes that uses Russet potatoes so you can check that one out.

How To Make Scalloped Sweet Potato Casserole

  1. Preheat oven to 400F and grease an 8-inch round baking dish. You can also use an oval or oblong baking or casserole dish that’s about 1 1/2 to 2 quarts.
  2. Use a mandolin slicer to slice peeled sweet potatoes into 1/8-inch thick slices. This recipe is one where a mandolin is a lifesaver and I highly recommend it! Place the slices in the baking dish.
  3. Separately, combine the heavy cream and cornstarch.
  4. Separately, to a medium saucepan, add the butter to melt, then add the shallot and garlic to soften, before adding the remaining herbs and seasonings. Add the heavy cream mixture and then the Parmesan and stir.
  5. Pour mixture over the sweet potatoes and bake uncovered for about 45 minutes or until fork tender, garnish as desired, and serve!

Note: Scroll down to the recipe card section of the post for step-by-step photos and process shots of the cooking process.

A baked sweet potato gratin in a round white dish, topped with melted cheese and garnished with chopped herbs.
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5 from 3 votes

Scalloped Sweet Potatoes

🍠🍁🧀 With garlic and herbs, Parmesan cheese, and cream, it's the perfect sweet-yet-savory side dish that everyone raves about! An easy yet elegant sweet potato recipe that's perfect all fall, for Thanksgiving, Christmas, or holiday entertaining! Make ahead tips provided below in Step 8.
Prep Time: 30 minutes
Cook Time: 45 minutes
Servings: 8

Equipment

Ingredients 

  • 3 medium sweet potatoes, peeled and thinly sliced to 1/8-inch thickness (about 3 medium or 2 large sweet potatoes, choose potatoes that are uniform in size for best results)
  • 1 cup heavy cream
  • 1 teaspoon cornstarch
  • 4 tablespoons unsalted butter
  • 3 garlic cloves, finely minced
  • 1 large shallot, finely diced
  • 1 teaspoon kosher salt, or to taste
  • ½ teaspoon freshly ground black pepper, or to taste
  • 3 fresh thyme sprigs, (or about 3/4 to 1 teaspoon dried)
  • ¼ teaspoon ground sage, (or about 1/2 teaspoon fresh sage, finely minced)
  • ¾ cup shredded parmesan cheese, or to taste
  • Fresh parsley, fresh thyme, or other fresh herbs, optional and as desired for garnishing

Instructions 

  • Preheat oven to 400F and spray or grease your baking dish; set aside.
  • Slice the peeled sweet potatoes using a mandolin to about 1/8-inch thick. Tip – A mandolin is extremely helpful in this recipe and I encourage you to use one if you have it. If you don't, slice your sweet potatoes very thin, being extremely careful not to cut yourself.
  • Arrange the sweet potatoes in the baking dish; set aside.
    A round white dish filled with neatly arranged slices of raw sweet potato on a light marble surface.
  • To a large measuring cup or bowl, add the heavy cream, cornstarch, and whisk to combine; set aside.
    A bowl of milk with some white powder sprinkled on top stands next to a metal whisk on a white surface.
  • To a medium saucepan, add the butter, and heat over medium heat to melt the butter. Add the garlic, shallot, and cook for about 2 minutes to soften them; stir nearly continuously so they don't burn. Add the salt, pepper, thyme leaves from the fresh sprigs, sage, and stir to combine.
    A saucepan containing melted butter, chopped shallots, herbs, and black pepper cooking together on a light countertop.
  • Lower the heat to medium-low, slowly add the heavy cream mixture into the saucepan while whisking constantly.
    A saucepan containing a mixture of melted butter, oil, herbs, and finely chopped shallots or onions on a white countertop.
  • Add the Parmesan and stir to combine.
  • Evenly pour the mixture over the top of the sweet potatoes in the baking dish. Tip – I used a 2-tablespoon measuring spoon to help get the sauce into all the nooks and crannies of the potatoes. A small spoon or small ladle will also work to help get the sauce into the crevices between the potato slices.
    If you are making this in advance, stop now, cover tightly with foil, and refrigerate for up to 12-24 hours before baking off. Before baking, allow the baking dish to sit on your counter for about 45-60 minutes and come to room temperature so you're not baking with a fridge-cold dish, which will throw off the baking time and the results.
    A round white baking dish filled with thinly sliced sweet potatoes arranged in a spiral pattern, covered with melted cheese on top.
  • Bake uncovered for about 45-50 minutes, or until the potatoes are cooked through and the sauce is thick and bubbly. Baking Tips – Baking times are only listed as a guide since all ovens vary Begin checking at about 40 minutes and also don't be surprised if it takes 60 minutes to cook in your oven. The potatoes should be done and fork-tender. if they appear to be browning too quickly but not actually cooking through, cover the baking dish with foil for the remaining baking time.
    A round white baking dish filled with a layered, golden-brown sweet potato gratin topped with herbs, sitting on a white surface with a red napkin nearby.
  • Optional Broiling: For those who are very familiar with how to broil, and you'd like to add a bit of crispiness to the top, you can broil this for 2-4 minutes, taking extreme caution not to burn it in the final moments! Due to their natural sugars, sweet potatoes will burn quickly so I encourage you to stand in front of your oven and watch it like a hawk if you choose to broil. If you're not familiar with broiling or don't do it much, I would skip it.
  • Optionally garnish as desired and serve immediately.
    Golden, thinly sliced potatoes baked with cheese in a round white dish, with a serving spoon and a sprinkle of chopped herbs on top.

Notes

Storage: Leftovers will keep airtight in the fridge for up to 5 days or in the freezer for up to 3 months. For ease, I reheat it gently in my microwave although you could warm it in the oven.

Nutrition

Serving: 1serving, Calories: 270cal, Carbohydrates: 20g, Protein: 5g, Fat: 19g, Saturated Fat: 12g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 5g, Trans Fat: 0.2g, Cholesterol: 57mg, Sodium: 511mg, Potassium: 354mg, Fiber: 3g, Sugar: 5g, Vitamin A: 12737IU, Vitamin C: 3mg, Calcium: 136mg, Iron: 1mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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Sliced scalloped sweet potatoes baked with cheese and herbs, garnished with parsley, shown in close-up and in a serving dish. Text reads: "Best Scalloped Sweet Potatoes.
A round baking dish filled with scalloped sweet potatoes arranged in a spiral pattern, topped with melted cheese and herbs.
Baked scalloped sweet potatoes in a white dish, with a golden cheesy crust and garnished with chopped herbs. A serving spoon lifts a portion in the bottom image.

more easy sweet potato Casserole recipes

Baked scalloped sweet potatoes arranged in a circular pattern, topped with melted cheese and herbs, shown in a white dish with a serving spoon.
A round casserole dish filled with thinly sliced, baked scalloped sweet potatoes, garnished with herbs. Close-up of a plated serving below. Text reads "Best Scalloped Sweet Potatoes.
Sliced scalloped sweet potatoes baked with cheese and herbs, displayed in a white dish, with a serving spoon lifting a portion.

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5 from 3 votes (2 ratings without comment)

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Please note: I have only made the recipe as written, and cannot give advice or predict what will happen if you change something. If you have a question regarding changing, altering, or making substitutions to the recipe, please check out the FAQ page for more info.

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Comments

  1. 5 stars
    This is a delicious side for anytime of the year. Easy to make – can be prepped early and everyone raved about it.

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    1. Hi Brenda, I suggest entering your email in the SAVE recipe box towards the top of the post. And/or copy and paste the recipe card section in an email to yourself.

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