Vegan Potatoes Au Gratin Recipe (2024)

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The best vegan potatoes au gratin recipe with leeks, thyme, cashewcream and nutritional yeast. Easy to make, healthy and beyonddelicious!

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I’ve gotten many requests to veganize myclassic scalloped potatoes au gratin recipe and i challenged myself to make it WFPB compliant without using any oil. Mission accomplished friends!

But if you want to indulge a bit during the holidays you can top them with your favorite plant based cheese, i won’t judge! I’m a fan of provolone, pepper jack and smoked gouda from Follow Your Heart butwhatever rocks your tastebuds is fine! This walnut parmesan is a great choice too!

You are going to need a mandoline slicer to slice up the potatoes as thinly as possible.Preferably you’d be able to read the morning paperthrough those slices but don’t stress over it. Do your best to get them as thin as you can and if need be just increase the cooking time by 15 to 20 minutes or so.

I did a quick soak of the cashews that I then blended into a cheesy cream sauce with nutritional yeast, lemon juice, garlic and water. This is all you need toachieve that cheesy classic flavor and texture au gratinpotatoes have.

Let’s talk about the leeks!

Most definitely a favorite staple in myrefrigerator, leeks pack so much wonderful flavor I just can’t do without them.Basically a sweeter version of onions but with way more depth.

They are a great source of lutein and zeaxanthin twoimportant carotenoids for eye heath, on top ofbeing rich in fiber, calcium, iron, magnesium, phosphorus, potassium, vitamins A and K. You can use the entire leek including the mineral-dense little roots / filaments, just make sure to rinseeverything well as they are known to be full of grit and dirt.

Vegan Potatoes Au Gratin Bake Everyone will Love:

So Simple

Only 7 Ingredients

Comforting

Gluten Free

Dairy Free

No Oil

Easy to Make.

Watch How To Make Vegan Potatoes Au Gratin:

Vegan Potatoes Au Gratin Recipe (8)

5 from 3 votes

Vegan Potatoes Au Gratin with Leeks

The best vegan potatoes au gratin with leeks, thyme, cashew cream and nutritional yeast. Easy to make, healthy and beyond delicious!

Print Recipe

Prep Time:15 minutes mins

Cook Time:45 minutes mins

Total Time:1 hour hr

Ingredients

  • 1 lb golden potatoes (scrubbed and rinsed well)
  • 1 large leek (or 2 medium)
  • 2 tbsp fresh thyme leaves
  • 1 pinch red pepper flakes to taste
  • 1/4 cup fresh chives or dill -chopped
  • 3-5 oz vegan cheese (OPTIONAL)
  • sea salt + black pepper to taste

Cashew Cream:

US Customary - Metric

Instructions

  • Preheat your oven to 350”F.

Make the Cashew Cream:

  • In a small bowl soak the cashew in hot water for 20 minutes. Drain and rinse then add them to a powerful blender together with 1.25 cups of water, the lemon juice, garlic powder and nutritional yeast. Puree until smooth and creamy. Season to to taste with a pinch of sea salt and refrigerate until needed.

Make the Scalloped Potatoes:

  • Slice the leeks lengthwise then chop them up. Add them to a bowl with cold water. Stir to rinse well and allow them to stay in the water for a few minutes. All the grit and dirt will fall to the bottom of the bowl.Use your hands to scoop out the leeks from the water and drain them on a kitchen towel.

  • Preheat a large skillet on medium low flame. Add a splash of water and the leeks with a pinch of sea salt. Saute until wilted and they start to get some color adding more water if needed as not to burn them, about 10 to 15 minutes Adjust seasonings to taste with more sea salt and black pepper. Set aside.

  • Meanwhile use a mandoline to thinly slice the potatoes. Rinse well in some cold water and dry on a tea towel. Sprinkle all over the top with a good pinch of sea salt and black pepper.

  • Lightly oil a large gratin dish including the sides. (You can use 2 small gratin dishes if you wish)

  • Layer the thinly slice potatoes on the bottom of the gratin dish overlapping each other. Spoon the sauteed leeks and spread them on top of the potato slices. Sprinkle with the fresh thyme.

  • Pour the cashew cream over the leeks and give the dish a little shake. Sprinkle with the fresh chives or dill and a pinch of red pepper flakes.

  • At this point you can top with your favorite vegan cheese, loosely cover with aluminum foil and bake in the preheated oven for 45 minutes. Remove the foil and cook another 10 minutes or so until the cheese has melted. To brown the top you can transfer the gratin under the broiler flames for a few minutes until golden to your liking, just make sure that you are using a broiler proof dish.

  • Remove the potatoes from the oven and allow them to set for a few minutes before serving.

Video

Notes

  • You can omit oiling the baking dish and line it with parchment paper instead.
  • If your potatoesaren’t sliced paper thin make sure to adjust the cooking time and bake an additional 20 to 25 minutes or so until the potatoes havecompletely softened and cooked through.

Nutrition

Calories: 349kcal | Carbohydrates: 36g | Protein: 12g | Fat: 19g | Saturated Fat: 4g | Sodium: 236mg | Potassium: 836mg | Fiber: 6g | Sugar: 3g | Vitamin A: 645IU | Vitamin C: 29.8mg | Calcium: 92mg | Iron: 7.5mg

Course: Side Dish

Cuisine: French

Keyword: plant based, Vegan Potatoes Au Gratin, vegan,

Servings: 4 people

Calories: 349kcal

Author: Florentina

Potato Recipes:

Vegan Potatoes Au Gratin Recipe (2024)

FAQs

Why are my au gratin potatoes watery? ›

If you used a pre-prepped potato from the refrigerator section instead of slicing your own, they can have preservatives that make them a bit watery. If you stored your potatoes in water to prevent discoloring, be sure to drain them well and pat them dry before adding to your casserole.

Why are my au gratin potatoes hard? ›

Potatoes or rice can remain rock-hard after prolonged cooking. Starch will not swell if it is acidic. If you have a lot of sour cream in your scalloped potatoes or add something acidic, your potatoes may not soften. You can cook the potatoes with heavy cream or milk and then, after they soften, stir in sour cream.

How do you thicken au gratin potatoes? ›

As ridiculous as this may sound, a good way to thicken scalloped potatoes is by using…. dry potato powder or flakes! It's used for thickening many things such as sauces and gravy, and is a great way to thicken your scalloped potatoes because you'll keep the potato taste!

Why did my au gratin potatoes separate? ›

Scalloped or au gratin potatoes are so simple. But it can be frustrating when the creamy sauce and cheese separate or look curdled. The good news is that the dish tastes just fine, even when it looks a little strange. The curdling is caused by high heat, which is hard to avoid in an oven.

How do you fix runny scalloped potatoes? ›

Instant potato flakes are an excellent thickening agent made from real potatoes that have been cooked, mashed, and then dried. When added to watery scalloped potatoes, they absorb excess moisture and thicken the sauce, improving the overall consistency.

How do you fix watery potatoes? ›

Whisk a little cornstarch into the warm potatoes, only a teaspoon at a time, until the potatoes thicken to your liking. The potatoes must be warm. You can also use tapioca starch or potato starch, although most cooks are less likely to have those products on hand.

Why are my potatoes not getting soft in the oven? ›

Old Potatoes: Very old or stored potatoes can become starchy and may not soften as well during cooking. It's best to use fresh, firm potatoes. Acidic Ingredients: If your soup contained highly acidic ingredients (e.g., tomatoes), it could have affected the texture of the potatoes.

How do you keep au gratin potatoes from curdling? ›

The best way to prevent curdling in scalloped potatoes is to start with high starch potatoes, such as Russets, that will help to thicken the sauce, use very fresh cream or half-and-half rather than whole or low-fat milk, and thicken the cream with flour or corn starch to make a sauce rather than topping the ingredients ...

What pan is best for au gratin potatoes? ›

The vessel best suited for most au gratin dishes is, simply enough, an au gratin pan. It can be round, oval or rectangular, and most commonly it is about an inch and a half deep. The material can be copper, stainless steel, enameled iron, aluminum, glass.

Can you make au gratin potatoes ahead of time and reheat? ›

It is possible to pre-prepare the gratin up to 2 days ahead by simmering the potatoes and transferring them to the buttered baking dish, then refrigerating them until needed. You should cool and refrigerate the mixture as quickly as possible, and within 2 hours of cooking.

Does cream cheese thicken potatoes? ›

Will cream cheese thicken mashed potatoes? It will, but in the best way! Then the milk is used to thin the potatoes back out again for the best, creamiest texture!

Why did my scalloped potatoes turn gray? ›

Once they have been peeled and cut, raw potatoes will turn brown quickly. This process, which is called oxidation, happens because potatoes are a naturally starchy vegetable. And when exposed to oxygen, starches turn gray, brown, or even black. An oxidized potato is completely safe to eat.

Can I slice potatoes ahead of time for gratin? ›

If you're here, you'll probably be glad to know that yes, you can peel and cut potatoes the day before you plan to serve them — and that it's super easy! All you have to do is submerge the bare potato pieces in water and refrigerate (more on that later).

Can you eat potato gratin the next day? ›

Culinary school taught me that leftovers should be eaten within two days, but if I cooked the meal, cooled the leftovers appropriately, and reheated appropriately: I'll eat leftovers for up to 5 days.

Can I slice potatoes for scalloped potatoes the day before? ›

If raw, once the potato is cut you can store in the refrigerator, covered with water for 12-24 hours. Be sure to keep submerged in water to prevent slices from turning gray or brown.

What causes watery potatoes? ›

Soil or dirt has a lot to do with the solids content of the harvested potato. Potatoes grown in clay or very dense soil have a tendency to not be able to get rid of the moisture versus potatoes grown in sandy soil or volcanic soil; which is what Idaho soil is.

What does it mean when potatoes are watery? ›

Runny potatoes can happen for a few different reasons. Too much liquid: This is the most common reason. In the mashing process you may have added too much milk or broth. Boiled too long: Boiling your potatoes for too long can make them water-logged, which (you guessed it) can contribute to runny mashed potatoes.

Why are my cooked potatoes watery? ›

You cut the potatoes in pieces that are too small, boiled them too long in too much water, and perhaps you let them sit in the water they boiled in after they were overcooked as well.

How do you fix a watery sweet potato casserole? ›

The solution for watery casseroles is instant potato mash powder or cornflour - slake (mix with a little water) at first or it will go lumpy. Stir well. Alternatively, don't add so much water at first, especially if you're using a slow cooker.

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