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Home » Recipes » Side Dish

Creamy Vegan Parsnip Gratin

Gluten FreeVegan

Published: Nov 15, 2023 · Modified: Nov 11, 2024 by Debra Klein · This post may contain affiliate links · Leave a Comment

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Creamy Parsnip Gratin is about to become your favorite side dish. This Vegan Au Gratin with Parsnips that has all the flavor, texture, decadence and taste that you expect from a creamy gratin. Oh this incredibly delicious side dish is so good, it’s worthy of a place at your holiday table. 

Thin discs of parsnip layered in a dish, covered in creamy sauce, topped with bread crumbs.
Jump to:
  • The Perfect Side Dish
  • Parsnips
  • Vegan Gratin Sauce Ingredients
  • Gratin Topping Ingredients
  • How to make Vegan Parsnip Gratin
  • Debra’s Pro Tips
  • How to Serve and Store
  • 📖 Recipe

I’ve been making Thanksgiving Dinner (well, we eat at 1:30..so maybe some would call it lunch) since before I even knew how to cook, so I know a thing or two about what people gobble up and go back for seconds on….the writing is on the wall for this Vegan Au Gratin Dish…BEST SELLER here we come.

You definitely don’t need heavy cream, potatoes or grated cheese to make a creamy gratin. This dairy-free Vegetable Gratin is subtly sweet, rich and creamy, and everyone will love it. Layers of sweet parsnips are covered in an easy to make vegan white sauce, sprinkled with vegan parmesan and bread crumbs, then baked to perfection. 

The Perfect Side Dish

  • Au gratin vibes all the way
  • Vegan…with a creamy, dreamy consistency
  • Make ahead and reheat to serve.
  • No fake food…wholesome ingredients combine for side dish perfection. 
  • Gluten-free…so everyone can enjoy this beauty. 
  • ​There are enough potato recipes on the holiday table..variety is the spice of life and this one is special.

Parsnips

2 ½ pounds of parsnips stacked on a counter.
  • They are easy to find in grocery stores and relatively inexpensive.
  • If your parsnips still have their tops attached, remove them before storing.
  • They’ll stay good in the fridge for 2-3 weeks, loosely wrapped in a plastic bag.
  • Look for firm, unblemished parsnips.
  • Larger parsnips have a tough, woody core…but it will soften and sweeten in this parsnip gratin recipe, so you can buy any size.
  • Parsnips look like a white carrot, and are in the same family, but they’re sweeter and have a bit of a spice to them along with a nutty taste.
  • Parsnips are high in fiber and Vitamin C with modest amounts of iron, folate, vitamin K, potassium and magnesium.
  • Root vegetables like parsnips are perfect for making a gratin.
  • If you love parsnips, try another great side dish: Honey Roasted Carrots and Parsnips Recipe.

Vegan Gratin Sauce Ingredients

Labeled ingredients: cashews, olive oil, garlic, nutritional yeast, salt and pepper.
  • Cashews: Use raw cashews and soak them in boiling water for a minimum of 30 minutes.
  • Nutritional yeast: You can find nutritional yeast at your local grocery store.
  • Garlic: Mince garlic cloves or use a microplane zester.
  • Olive oil: Helps emulsify this sauce, making it super creamy.For an oil free gratin, substitute with veggie broth.
  • Salt and Pepper: Use coarse sea salt and either black pepper or white pepper.

Gratin Topping Ingredients

Labeled ingredients: pine nuts, hemp seeds, nutritional yeast, garlic powder, olive oil, breadcrumbs.
  • Pine nuts: they’re soft and grind up with great texture.
  • Hemp seeds: rich in protein, fiber and omega 3s.
  • Nutritional yeast: imparts a cheese flavor
  • Breadcrumbs: Easily make your own with your favorite bread that meets your dietary needs.

How to make Vegan Parsnip Gratin

Step 1: Make the dairy-free gratin sauce.

Cashews covered in water.

Soak cashews in boiling water for minimum of 30 minutes, or up to 4 hours.

Small fry pan with olive oil and garlic, plus salt and pepper.

Cook grated garlic in olive oil, sprinkled with salt and pepper, over medium heat for about 1 minute, until fragrant. Stir constantly so garlic doesn’t burn.

Blender with cashews, garlic, oil and nutritional yeast.

Drain cashews. Add to blender along with nutritional yeast, garlic mixture and water.

Beige, creamy sauce in a blender.

Blend until thick and creamy. It should be pourable. If too thick, add another ¼ cup water and blend again.

Step 2: Make the gratin topping

Spice grinder cup filled with hemp seeds, pine nuts, nutritional yeast and spices.

Add pine nuts, hemp seeds, nutritional yeast, garlic powder and salt to a spice grinder.

Spice grinder container with crumbly yellow mixture.

Pulse until crumbly. Mixture will resemble parmesan cheese.

Small fry pan with toasted bread crumbs.

Toast a piece of your favorite bread. Break into small pieces and pulse in the spice grinder or food processor until the texture of bread crumbs. Use the same small fry pan and heat one tablespoon olive oil. Add the breadcrumbs and cook, stirring until golden brown.

Step 3: Assemble Parsnip Gratin

Parsnips on a cutting board, some peeled, some not.

Peel parsnips, then trim off the tops and bottoms.

Mandolin, thinly slicing parsnips.

Thinly slice parsnips. You can use a mandolin or the slicing disc of a food processor. ⅛″ thick slices are ideal.

Black bowl with thin slices of parsnips, covered in cream sauce.

Place sliced parsnips in a large bowl and pour over half the creamy sauce.

Tongs tossing sliced parsnips with cream sauce.

Use tongs to mix until all parsnips are coated with sauce.

Layers of sliced parsnips in a casserole dish.

Arrange half the coated parsnips into the bottom of a casserole dish. Make sure layers of parsnips are evenly dispersed. Drizzle on half the remaining cheese sauce.

Layers of sliced parsnips sprinkled with vegan parmesan cheese.

Sprinkle with half the crumbly parmesan cheese mixture.

Layers of thinly sliced parsnips.

Now add the last layer of parsnip slices. There should be enough parsnips to fill the baking dish. You can take time to make nice looking overlapping rows, or not…it will taste great either way!

Thinly sliced parsnips with sauce and parmesan sprinkled on top.

Pour on the remaining sauce and then sprinkle with the rest of the parmesan mixture.

Evenly spread the breadcrumbs over the top of the layered parsnips.

Bake in preheated 375 oven on the middle rack for 45-50 minutes. cooking times will vary depending on how thick you sliced the parsnips. The top of the gratin should be crisp and the inside layers should be tender.

Debra’s Pro Tips

  • Don’t skip the breadcrumbs…that crisp topping is possibly the best part. It’s easy to make your own as directed, but there’s no shame in buying already made panko to sprinkle on top.
  • Make it a parsnip potato gratin recipe by using just a pound of parsnips and the rest potatoes.
  • You can add a little sprinkling of nutmeg into the sauce, to bring out all the earthy flavors.

How to Serve and Store

  • Serve warm alongside your favorite holiday dishes or as a side dish anytime. I’ve been known to eat leftovers for breakfast as my main dish!
  • Store tightly covered in the fridge for up to a week.
  • Texture and flavor will suffer in the freezer, I don’t recommend freezing.
  • Meal prep: Assemble gratin, but don’t bake. Cover tightly with foil , refrigerate and bake as directed later or the following day.
  • Reheat: Cover with foil and heat in 350 oven for 15 minutes, then turn up to 450 for an additional 5 minutes to brown the topping.

Did you know commenting and rating recipes is one of the best ways to support your favorite food bloggers? If you made this recipe, please consider a five star rating below and leave a comment. Also, please share your photos on instagram by tagging me @dkhealthcoach and using the hashtag #debraklein

📖 Recipe

Parsnip gratin in a white baking dish, a spoon scooping out a portion.

Parsnip Gratin

Author: Debra Klein
Creamy Parsnip Gratin is delicious and decadent, the perfect vegan side dish for your holiday meals. It's dairy-free, gluten-free and tastes incredible.
5 from 37 votes
Rate this Recipe
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Prep Time 15 minutes mins
Cook Time 45 minutes mins
Total Time 1 hour hr
Course Side Dish
Cuisine American
Servings 10
Calories 298 kcal

Equipment

  • Mandoline Slicer
  • Food Processor
  • Spice Grinder
  • 2 ½ quart baking dish

Ingredients
  

  • 3 lbs parsnips

Sauce

  • 1 ½ cups raw cashews soaked in boiling water 30 minutes or more
  • ¼ cup extra virgin olive oil
  • 2 tablespoon freshly grated garlic
  • ½ teaspoon sea salt
  • ¼ tsp black pepper
  • 2 tablespoon nutritional yeast
  • 1 ½ cups water

Topping

  • 2 tablespoon pine nuts
  • 2 tablespoon hemp seeds
  • 2 teaspoon nutritional yeast
  • 1 teaspoon garlic powder
  • ½ teaspoon sea salt
  • ⅓ cup gluten-free bread crumbs made from 1 slice bread
  • 1 tblsp olive oil extra virgin

Instructions
 

  • Soak cashews in boiling water for at least 30 minutes.

Make Sauce

  • Grate garlic. Heat olive oil in small pan, add garlic, salt and pepper and stir, cooking, until fragrant, about 1 minute. Drain cashews and add to blender along with garlic and oil, nutritional yeast and water. Blend until smooth and creamy.

Make Topping

  • Place pine nuts, hemp seeds, nutritional yeast, garlic powder and sea salt into spice grinder (or use a coffee grinder or very small food processor/blender. Pulse/grind until well mixed and crumbly, careful not to turn into a pasty mush. Set aside this vegan parmesan cheese.
  • Toast one slice of bread. Pulse in small food processor or spice grinder until the texture of breadcrumbs is acheived. Use the same small pan from the sauce, heat 1 tablespoon olive oil and toss the breadcrumbs in it until golden brown.

Assemble Gratin

  • Trim and peel parsnips. Use mandolin or slicing disc of food processor to thinly slice (about ⅛") parsnips. Place sliced parsnips along with half the sauce into a large mixing bowl. Continue to mix until all parsnips are thoroughly coated with sauce.
  • Arrange half the coated parsnips in casserole dish. Pour on half the remaining sauce. Sprinkle on half the vegan parmesan.
  • Add the remaining parsnips, then the remaining sauce and finally the remaining vegan parmesan mixture. Then sprinkle on the toasted bread crumbs.
  • Bake in preheated 375 degree oven for 45-50 minutes, until parsnips are tender.

Nutrition

Calories: 298kcalCarbohydrates: 32gProtein: 8gFat: 19gSaturated Fat: 3gPolyunsaturated Fat: 4gMonounsaturated Fat: 10gSodium: 251mgPotassium: 699mgFiber: 8gSugar: 8gVitamin A: 17IUVitamin C: 24mgCalcium: 65mgIron: 3mg
Note

The nutrition calculations were done using online tools. To obtain the most accurate representation of the nutritional information in any given recipe, you should calculate the nutritional information with the actual ingredients you used. You are ultimately responsible for ensuring that any nutritional information is accurate, complete and useful.

Did you make this recipe? Please leave a review below, then snap a picture and tag me @dkhealthcoach or use hashtag #dkhealtcoach on Instagram so I can see it!!

Categories

Gluten FreeHanukkahRosh HashanahSide DishThanksgivingVegan

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5 from 37 votes (37 ratings without comment)

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Photo of Debra Klein in the kitchen, smiling, tossing a salad.

Hi, I’m Debra, Holistic Health Coach and Culinary Instructor inspiring healthy choices with seasonal plant-based recipes. I'm also passionate about transforming Traditional Jewish Foods into dishes that are nutritious, delicious, beautiful and satisfying. Let's get into the kitchen and have some fun.

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