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    Where Is My Spoon > Recipes > Side Dishes

    Sweet Potato Dauphinoise

    Last modified: Jun 14, 2024 ยท Published by Adina, Oct 20, 2020 ยท 9 Comments

    Jump to Recipe
    dauphinoise with cream and parmesan in a serving dish on a green towel.

    Easy sweet potato dauphinoise or sweet potatoes au gratin with Parmesan and lots of spices is a comforting side dish or light main meal for any time of the year.

    Easy Sweet Potato Gratin with Parmesan

    I adore sweet potatoes! Honestly, they are one of the most comforting vegetables out there, so soft and tender, sweet, and delicious! This sweet potato dauphinoise is one of my favorite side dishesโ€”perfect for Christmas, for instance!

    This time, I tried something different: a flavorful Parmesan sweet potato gratin. Layers of meltingly soft potatoes are spiced with cinnamon, cumin, and turmeric. This garlicky and cheesy dish is perfectly suited as a side for chicken or fish.

    And not only a side dish. I reheated the leftovers the next day and made a crisp green salad with yogurt dressing, and I couldn't have been happier. A satisfying, light, and super healthy lunch!

    Jump to recipe
    • Recipe ingredients
    • How to season sweet potatoes?
    • How to serve?
    • Other delicious gratins or casseroles
    • Recipe
    • Sweet Potato Dauphinoise

    Recipe ingredients

    • Dairy: I used a mixture of milk and cream to pour over the gratin. Many people only use the cream for making a potato gratin or dauphinoise, but to tell you the truth, although I love those creamy gratins, I am usually not so keen on eating so much cream (unless it is whipped and on a cake... ๐Ÿ™‚ ).
      • Other people only use milk for their gratins, and I tried that myself a couple of times. It is not that I did not like it at all, but still, I prefer the creamier result given by the combination of milk and cream.
    • Parmesan: Choose a vegetarian hard cheese if you like to keep this dish vegetarian.
    • Sweet potatoes used for potato gratin should be sliced very thinly and regularly. Otherwise, it will take them ages to cook.
      • It is very advisable to use a mandoline (the Amazon affiliate link opens in a new tab); it makes the job much better and faster than you could possibly do it yourself. I tried many times (before buying a good mandoline) to cut potatoes thinly, but it never really worked out.

    How to season sweet potatoes?

    • I used a mixture of cinnamon, turmeric, cumin, cayenne pepper, and garlic, a rather Middle East-inspired spice mixture.
    • But this spice mixture is really optional; you can spice the dish with any kind of spices you like, something to better fit your personal taste, or something to fit the main dish you're serving this gratin with.
    • Salt and pepper would be quite enough as well if you like to keep it simple; the tubers have enough taste on their own.
    • Otherwise, I sometimes like to spice the dish with paprika, either sweet, hot, or smoked, dried herbs like thyme, savory, or oregano, and even herb mixtures like Herbs de Provence or Italian Herbs. Just follow your inclination; I think you can hardly go wrong here.
    Easy Sweet Potato Gratin with Parmesan

    More seasoning ideas for any sweet potato dish

    • smoked paprika, black pepper, cayenne pepper, salt, a little brown sugar, and some oil
    • Italian seasoning, salt, some olive oil, and oregano or rosemary
    • cinnamon and brown sugar for a sweeter version of roasted sweet potato wedges
    • cumin, garlic powder, sweet paprika, black pepper, salt, and some oil
    • sumac, garlic, salt, and olive oil

    How to serve?

    The dish serves two as a main dish with a salad or four as a side dish. The gratin is at its best when served immediately, but it can be reheated in the oven as well. It doesn't freeze well.

    Easy Sweet Potato Gratin with Parmesan

    Other delicious gratins or casseroles

    • Pumpkin Potato Bake
    • Green Bean Casserole without Soup
    • Tortellini Vegetable Bake
    • Kirschmichel - Cherry Casserole
    • Butternut Squash and Sausage Casserole

    And just in case you are seeing this recipe around Thanksgiving, have a look at these 10 Thanksgiving Potato Side Dishes.

    Do you like this recipe?

    Please leave a good rating in the recipe card below. Stay in touch through social media: Pinterest, Facebook, and Instagram. Donโ€™t forget to tag #whereismyspoon when you try a recipe!

    Recipe

    scooped out sweet potato gratin in a blue baking dish on a green towel.

    Sweet Potato Dauphinoise

    Creamy sweet potato dauphinoise or sweet potatoes au gratin with Parmesan and lots of spices, a comforting side dish, or light main meal for any time of the year.
    5 from 4 votes
    Print Pin Share GrowSaved! Rate
    Course: Side Dishes
    Cuisine: American
    Prep Time: 20 minutes minutes
    Cook Time: 50 minutes minutes
    Total Time: 1 hour hour 10 minutes minutes
    Servings: 2 -4
    Calories: 445kcal
    Author: Adina
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    Ingredients 

    • 1 lb sweet potatoes 450 g
    • ยฝ teaspoon cinnamon
    • ยผ teaspoon cumin
    • โ…› teaspoon cayenne pepper
    • ยฝ teaspoon turmeric
    • 3 garlic cloves
    • 1 tablespoon olive oil
    • 1 cup milk 250 ml
    • 1 cup heavy cream 250 ml
    • ยฝ cup Parmesan 50 g
    • a small knob of butter
    • fine sea salt

    Instructions

    • Preheat the oven to 200 degrees Celsius/ 400 degrees Fahrenheit.
    • Slice sweet potatoes: Peel the sweet potatoes and slice them thinly using a mandoline. Place them into a bowl.
    • Seasoning: Mix cinnamon, cumin, cayenne pepper, turmeric, grated garlic, and olive oil. Rub the sweet potato slices with this mixture.
    • Mix milk and cream, add a little salt to the mixture.
    • Assemble the dish: Butter a casserole dish. Place about โ…“ of the milk-cream mixture into the dish. Arrange half of the potato slices in the dish. Sprinkle them with half of the grated Parmesan.
      Add another โ…“ of the milk-cream mixture and arrange the remaining sweet potato slices on top. Pour in the remaining milk-cream mixture.
      Push the potatoes a little bit down to make sure that the liquid surrounds them. Then, sprinkle with the remaining Parmesan.
    • Bake for about 40-50 minutes or until the sweet potatoes are soft. If the gratin gets too brown too soon, cover it loosely with aluminum foil.
    • Rest for 5-10 minutes before serving.

    Notes

    The recipe serves two as a main dish and 4 as a side dish.

    Nutrition

    Serving: 1/4 of the dish | Calories: 445kcal | Carbohydrates: 31g | Protein: 10g | Fat: 32g | Saturated Fat: 18g | Polyunsaturated Fat: 11g | Trans Fat: 1g | Cholesterol: 90mg | Sodium: 589mg | Fiber: 4g | Sugar: 9g
    Tried this Recipe? Pin it for Later!Mention @adinabeck or tag #WhereIsMySpoon!

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    Reader Interactions

    Comments

    1. Stephanie says

      May 28, 2021 at 12:34 am

      Why does it look curdled?

      Reply
      • Carol says

        November 15, 2024 at 2:17 pm

        5 stars
        If anyone would actually make this recipe you would realize that the photos show a lovely casserole with the sweet potato slices adding texture in layers. It is a bit difficult to make sweet potato look really gorgeous so what I am seeing is a beautiful dish to try and curdled???? No.I have made this -it takes time and it is really really delicious. For sweet potato fans!

        Reply
        • Adina says

          November 16, 2024 at 1:30 pm

          Hi Carol. Thank you for the nice comment. I am so happy you tried this recipe and that you liked it.

    2. mjskitchen says

      March 18, 2018 at 2:42 am

      YUMMMY!!! Fabulous idea to use sweet potatoes in a gratin. It looks fabulous and I love your seasoning.

      Reply
    3. Kim says

      March 16, 2018 at 6:47 pm

      All hail the sweet potato. I did not know that they were not readily available in Europe until recently. The gratin looks amazing and I love how you added a little turmeric to the spices. A great dish!

      Reply
    4. Sissi says

      March 14, 2018 at 10:01 pm

      I must admit I'm also not a huge fan of sweet potatoes, but your gratin looks so gorgeous I'd be more than happy to taste it an check if I haven't changed my mind ๐Ÿ™‚

      Reply
    5. Priya @priyascurrynation says

      March 14, 2018 at 4:09 pm

      potato + parmesan = what a creaaammmmyyyyy combo ! I love this recipe...

      Reply
    6. Marvellina | What To Cook Today says

      March 13, 2018 at 8:30 pm

      I love the natural sweetness of sweet potato and then the savory cheese...perfect combo!

      Reply
    7. Evi @ greenevi says

      March 13, 2018 at 7:11 pm

      (Sweet) potato gratin is the ultimate comfort food! This looks really great, Adina ๐Ÿ™‚

      Reply
    5 from 4 votes (3 ratings without comment)

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