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:

& 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

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

  • 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
  • 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.

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

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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