Rich and Creamy Vegan Potatoes Au Gratin

Rich and Creamy Vegan Potatoes Au Gratin

The Spruce / Julia Hartbeck

Prep: 10 mins
Cook: 40 mins
Total: 50 mins
Servings: 3 to 4 servings
Nutrition Facts (per serving)
531 Calories
20g Fat
79g Carbs
11g Protein
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Nutrition Facts
Servings: 3 to 4
Amount per serving
Calories 531
% Daily Value*
Total Fat 20g 26%
Saturated Fat 4g 19%
Cholesterol 0mg 0%
Sodium 1622mg 71%
Total Carbohydrate 79g 29%
Dietary Fiber 9g 32%
Protein 11g
Calcium 175mg 13%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

Do you love potatoes au gratin, but need a vegan recipe? This baked potato casserole dish is covered in a rich and creamy cheese sauce that has no dairy ingredients. This vegan version makes a thick dairy-free sauce out of nutritional yeast instead.

While there are many brands of vegan cheese on the market, you don't necessarily need them for the gratin in potatoes au gratin. You'll find that nutritional yeast can do the trick as well.

If you like this vegan baked potatoes au gratin, you might like this similar recipe for vegan scalloped potatoes. You can also enjoy spicy vegan scalloped potatoes with green chilies as another potato casserole variation for dinner.

Ingredients

  • 3 potatoes (sliced about 1/3 inch thick)
  • 1 onion (chopped)
  • 1 clove garlic (minced)
  • 1 tablespoon, plus 1/4 cup olive oil
  • 1/2 cup vegan margarine
  • 1/2 cup flour
  • 3 1/2 cups water (boiling)
  • 1 teaspoon salt
  • 2 tablespoons soy sauce
  • 1/4 teaspoon turmeric
  • 3/4 cup nutritional yeast
  • Optional: 1/2 to 3/4 teaspoon  paprika

Steps to Make It

  1. Gather the ingredients.

    Rich and Creamy Vegan Potatoes Au Gratin ingredients

    The Spruce / Julia Hartbeck

  2. Preheat the oven to 350 F and bring two pots of water to a boil, one to pre-cook the potato slices (unless using a microwave instead), and one for boiling water for the sauce.

    water in a pot

    The Spruce / Julia Hartbeck

  3. Slice the potatoes about 1/3-inch thick.

    sliced potatoes on a cutting board

    The Spruce / Julia Hartbeck

  4. Add potatoes to boiling water and cook for 5 to 6 minutes. Alternatively, place them in a vegetable steamer in the microwave for 5 minutes. Don't overcook and have slices turn to mashed potatoes. (It is necessary to pre-cook the potatoes for them to be properly done after baking the casserole.)

    potatoes in boiling water

    The Spruce / Julia Hartbeck

  5. Drain well, then spread half the potatoes in a casserole dish.

    Spread the potatoes in a casserole dish

    The Spruce / Julia Hartbeck

  6. Sauté onions and garlic in a large skillet with a tablespoon of olive oil for 3 to 4 minutes.

    Saute onions and garlic in a pan

    The Spruce / Julia Hartbeck

  7. Reduce heat and add vegan margarine and flour, stirring continuously until thickened.

    vegan margarine and flour with onions and garlic in a pan

    The Spruce / Julia Hartbeck

  8. Add boiling water, salt, soy sauce, and turmeric, frequently stirring until thickened.

    boiling water, salt, soy sauce, and turmeric added to the mixture in the pan

    The Spruce / Julia Hartbeck

  9. Add remaining 1/4 cup olive oil and nutritional yeast, stirring again just until well mixed.

    olive oil and nutritional yeast added to the mixture in the pan

    The Spruce / Julia Hartbeck

  10. Pour half of the sauce mixture over half of the potatoes in the casserole dish.

    Pour half of the sauce mixture over half of the potatoes in the casserole dish

    The Spruce / Julia Hartbeck

  11. Add a layer of the remaining potatoes and cover with the remaining sauce.

    Add a layer of the remaining potatoes and cover with the remaining sauce

    The Spruce / Julia Hartbeck

  12. Cover and bake for 10 minutes. Then uncover, and bake for an additional 10 to 12 minutes.

    baked potatoes au gratin in a baking dish

    The Spruce / Julia Hartbeck

  13. Remove the casserole from the oven. Sprinkle the top with paprika, if desired.

    paprika sprinkled on top of the potatoes au gratin

    The Spruce / Julia Hartbeck

  14. Allow for the potatoes au gratin to cool for 10 minutes before serving, as the sauce will thicken as it cools.

    Rich and Creamy Vegan Potatoes Au Gratin in a baking dish

    The Spruce / Julia Hartbeck