Garlicky Vegan Potato Gratin

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Circular baking dish filled with a vegan potato gratin arranged in a circular pattern

We already had mashed potatoes, sweet potatoes, and scalloped potatoes, but there was something special missing from our potato-themed holiday side dish collection! Say hello to the (vegan) potato gratin — a creamy and classic side that’s stunning enough for any celebration! 

Whether you prefer Yukon gold potatoes, purple potatoes, or sweet potatoes, this dish has you covered. It’s full of garlicky, savory goodness thanks to a dreamy dairy-free sauce, and it requires just 8 ingredients! Let us show you how it’s done!

Nutritional yeast, olive oil, nutmeg, garlic, salt, black pepper, vegan parmesan cheese, cashews, gold potato, sweet potatoes, and water

What is Au Gratin?

Gratin, also called au gratin, is a French cooking technique that involves creating a delicious browned crust over a dish (source). While the topping is usually made with breadcrumbs, grated cheese, egg, and/or butter, the following is a vegan and gluten-free version of a potato gratin.

How to Make a Vegan Potato Gratin

This savory plant-based side starts with a flavorful cream sauce made with cashews, garlic, nutritional yeast, salt, pepper, and nutmeg (for elegance)! The result is a creamy dairy-free sauce that will naturally thicken and caramelize in the oven. YUM.

Cashews, garlic, water, and seasonings in a blender to make a dairy-free cream sauce

After blending the sauce, chopped rosemary joins the party for an extra flavorful touch. Then it’s time to coat the thinly sliced potatoes in the sauce and add them to the baking dish. We like to use a variety of potatoes because we love pretty colors, but any potato works well!

Placing potatoes into a circular pan in a spiral pattern

The final touch before the oven is a sprinkle of vegan parmesan (duh) and an extra dash of rosemary (so classy)!

Potato au gratin before baking

After a quick vacay in the oven, the gratin is ready: tender potatoes with crispy edges, coated in garlicky, “cheesy” goodness. And that presentation? Ten out of ten, if we do say so ourselves!

Potato au gratin after baking

We hope you LOVE this vegan potato gratin! It’s:

Savory
Rich
Garlicky
Comforting
Saucy
& SO classic!

Enjoy it as part of a holiday spread or as a versatile side dish. It pairs well with our 1-Pan Garlicky Green Beans with Slivered Almonds, Thyme & White Bean Pot Pies, Lemon & Herb Roasted Chicken, and more!

More Delicious Potato Recipes

If you try this recipe, let us know! Leave a comment, rate it, and don’t forget to tag a photo @minimalistbaker on Instagram. Cheers, friends!

Vegan potato gratin speared on a fork and topped with fresh rosemary

Garlicky Vegan Potato Gratin

Tender potatoes and a dairy-free cream sauce come together in this stunning potato gratin made with just 8 ingredients! It’s the ultimate holiday side dish!
Author Minimalist Baker
Print
Garlicky vegan potato gratin in a baking dish
5 from 2 votes
Prep Time 15 minutes
Cook Time 1 hour
Total Time 1 hour 15 minutes
Servings 4 (generous side servings)
Course Side
Cuisine French-Inspired, Gluten-Free, Grain-Free, Vegan
Freezer Friendly 1 month
Does it keep? 2-3 Days

Ingredients

  • 1 cup water
  • 1/2 cup raw cashews
  • 3 medium cloves garlic
  • 3 Tbsp nutritional yeast
  • 2 Tbsp olive oil
  • 1/4 tsp each sea salt and black pepper (plus more to taste)
  • 1/8 tsp ground nutmeg (optional)
  • 2 tsp fresh rosemary (finely chopped // plus more for topping)
  • 3 large (~200 g each) potatoes of choice (very thinly sliced, ~1/16 inch. We used 1 Yukon gold, 1 sweet potato, and 1 purple potato)
  • 2 Tbsp vegan parmesan cheese

Instructions

  • Preheat the oven to 400 degrees F (204 C) and set out an 8 x 8-inch (or similar size) baking dish or oven-proof skillet (adjust the size of the dish if altering the default number of servings).
  • To a high-speed blender, add the water, cashews, garlic cloves, nutritional yeast, olive oil, salt, pepper, and nutmeg (optional). Blend on high until very smooth with no bits of cashews remaining, scraping down the sides as needed. This takes about 1-2 minutes. Transfer to a mixing bowl and add the finely chopped rosemary. Mix to evenly combine.
  • Add the sliced potatoes to the bowl of sauce in small batches, tossing with clean hands to evenly coat each slice in sauce. Transfer the slices to your baking dish of choice and arrange them in spirals, or rows, where they are close together with no large gaps (see photos). Repeat until all the potatoes are coated in sauce and arranged in the dish. Pour any remaining sauce over the top of the potatoes and jiggle the dish side to side to get the sauce to settle between the potatoes.
  • Sprinkle the top with the vegan parmesan cheese and a few small sprigs of rosemary, then cover with foil. Bake for 45-55 minutes or until the potatoes are very tender when poked with a knife. Remove the foil and bake for an additional 15 minutes to brown the top.
  • Enjoy warm! Leftovers keep for 2-3 days in the refrigerator or in the freezer for up to 1 month.

Notes

*Nutrition information is a rough estimate calculated with 200 grams each of Yukon gold potato, purple potato, and sweet potato and without optional ingredients.

Nutrition (1 of 4 servings)

Serving: 1 generous side serving Calories: 308 Carbohydrates: 35.6 g Protein: 9.7 g Fat: 15.5 g Saturated Fat: 2.5 g Polyunsaturated Fat: 2.2 g Monounsaturated Fat: 9.5 g Trans Fat: 0 g Cholesterol: 0 mg Sodium: 236 mg Potassium: 640 mg Fiber: 5.3 g Sugar: 4.2 g Vitamin A: 1065 IU Vitamin C: 10 mg Calcium: 40 mg Iron: 4.3 mg

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  1. Alison Sanders says

    We made this for Thanksgiving to have a dairy free but rich and satisfying potato dish. It was a hit! The rosemary, garlic, and parm / nutritional yeast paired so well with the sweet potatoes. And it was gorgeous. Thank you so much for what you do. Your recipes and this site are a go-to for me, and I’ve given your book out as gifts. Very grateful for these recipes!

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Hi Eliza, in our experience, a food processor doesn’t get the cashews as creamy, unfortunately!

  2. Mihana says

    Doubled this recipe for a family of 5, enough for leftovers and it was a winner! I was concerned the sauce was too runny in the dutch oven but it turned out perfectly. Subbed conventional sharp cheddar for vegan parm. Will definitely add this to our potato recipe rotation.

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Hi Carol, the olive oil adds richness, but it should still be good without it! You could add a few more cashews, if desired. Let us know if you try it!

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Hi Sally, we haven’t tested with pine nuts, but think they would probably work texturally but might have too strong of a flavor. If you don’t mind a mild coconut flavor, we’d suggest canned light coconut milk + cornstarch, arrowroot, or tapioca starch, similar to this recipe. Hope that helps!

    • Judi says

      I absolutely love your recipes! Is it possible to make this delicious dish without using oil? Many thanks for your willingness to share your passion for cooking!

      • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

        Hi Judi, the oil makes the potatoes crispy, but it might work oil free. We haven’t tried this recipe without it, but let us know if you do!

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      Hi Sophie, are you referring to just prepping it in advance or cooking fully and reheating? If just prepping in advance, we think it would work if using orange or purple potatoes or sweet potatoes – just make sure to cover thoroughly to prevent it from drying out (and maybe add a little more liquid to the cashew sauce). If using white potatoes or sweet potatoes, they’ll be prone to browning which won’t look as appetizing. If you want to make it fully and then reheat on the day, we think that would be ideal!

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      We didn’t find it necessary in this recipe since there’s plenty of other flavors going on, but you certainly can! If you don’t have a powerful blender, it would help to soak them. Hope that helps!

    • Avatar for Dana @ Minimalist BakerSupport @ Minimalist Baker says

      We hear you! We wish that was an option and we’re always trying to optimize for user experience, while also balancing the need to have ads to keep the content free and high quality.

      • The Vegan Goddess says

        There are 10 ads in the body of the recipe and one ad on the sidebar.

        Can it be reduced to half in the body that which is already a lot?

        • Lauen says

          Ads are the reason we have access to hundreds of FREE high quality recipes from Minimalist Baker. What you are asking is for her to reduce her income by half. Imagine if someone said that to you. Ignore the ads and focus on the positive (free content)