Brown Butter & Spice Sweet Potato Casserole

Budget Friendly

Brown Butter + Spice Sweet Potato Casserole


15 minutes


1 hour 5 minutes



    vegan sweet potato casserole

Nothing beats a yummy sweet potato casserole. It’s a classic dish that seriously never gets old. Most people have a recipe that has been passed on for generations, and with this recipe, I’ve taken a classic dish and just added an additional kick to it. 

I’ve used a yummy winter warming spice blend that really is the icing on top of the cake with this casserole, it’s so flavourful and delicious. Imagine something so buttery and sweet, but yet savoury and salty, all coated in this delicious spice blend.

vegan sweet potato casserole

vegan sweet potato casserole

vegan sweet potato casserole

Here’s why you’ll love this sweet potato casserole 

  • It’s sweet, savoury, spicy, salty, tangy – it’s everything you need and satisfies all pallets! 
  • The spice blend is versatile and truly delicious
  • The recipe itself it such a crowd pleaser but can also be used on veg like potato, butternut squash, other root vegetables, or even with apple, leeks and parsnips

vegan sweet potato casserole

vegan sweet potato casserole

vegan sweet potato casserole

Nature’s Way Immune Powder

The not-so-secret ingredient in this casserole is Nature’s Way Immune Powder. This powder harnesses the benefits of six diverse mushrooms to support your immune function.* The mushrooms utilized in this powder are: 

  • Maitake
  • Reishi
  • Enokitake
  • Shiitake
  • Chaga
  • Himematsutake

The most common ones that you’ll recognize from the list above are shiitake and chaga. Chaga is a superfood loaded with a wide variety of vitamins, minerals and nutrients.. Shiitake mushrooms have been known to boost your immunity, along with a long list of other benefits.* Mushrooms, in general, are full of nutrients and that’s why this Immune Powder is so great to add to any recipe in order to make sure that you keep your immunity up all winter.* You can also buy their Immune Blend in capsule form as well. 

Feeling our best can be challenging during the winter months, so finding ingredients that can be added to savoury dishes like this can help make sure you stay in tip-top shape all winter long. Most people only think of these sorts of powders to be added in hot drinks, but they can be great in a ton of different dishes like soups, stews, casseroles, etc. 

vegan sweet potato casserole

vegan sweet potato casserole

vegan sweet potato casserole

Tips to make this sweet potato casserole

  • Use a mandolin to cut the potatoes, this makes for more even cooking and it’s much much quicker! (Be careful though, those suckers are sharp!) 
  • Pre-make the spice blend to save time
  • I like leaving the skin on the potatoes, just be sure to wash them well and dry before cutting
  • Top with fresh aromatic herbs like thyme, sage or rosemary for serving – this adds that perfect touch of green 
  • Be patient when baking and make sure to cook for at least one hour 

vegan sweet potato casserole

vegan sweet potato casserole

Other comforting meals to try this winter

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vegan sweet potato casserole

Brown Butter + Spice Sweet Potato Casserole

  • Author: Maria Koutsogiannis
  • Prep Time: 15 minutes
  • Cook Time: 1 hour 5 minutes
  • Total Time: 1 hour 20 minutes
  • Yield: 4 1x
  • Category: Main Dishes
  • Cuisine: Vegan



For The Winter-Warming Spice Blend
  • 1/2 cup brown sugar
  • 1 1/2 tbsp. Nature’s Way Immune Blend
  • 1 tbsp. smoked paprika
  • 1 tbsp. garlic powder
  • 1 tbsp. onion powder
  • 1 tbsp. fine or coarse sea salt
  • 1 tbsp. black pepper
  • 1 tbsp. oregano
  • 1 tsp mustard powder
  • 1/2 tsp cinnamon
  • 1/4 tsp cayenne pepper or chilis 

NOTE: This spice blend makes approximately 6 servings.

Method: Into a large jar or bowl combine all the ingredients, shake or stir till well combined. 

For the Sweet Potato Casserole:
  • 1 1/2 large sweet potato, thinly sliced, around 1/8 inch
  • 3 tbsp. Winter-Warming Spice Blend 
  • 1 tsp dijon mustard
  • 1 tsp vegetable stock paste
  • 3/4 cup hot water
  • 3 tbsp vegan butter


Preheat oven to 425F.
Into an 11x9x2 inch baking dish begin to place your halved sweet potato slices cut side down and arrange however you please.  See photos for inspiration but you can do in lines, circles or zig-zag!
Once your potatoes are arranged then dust with your Winter-Warming Spice Blend, coat evenly.  Into the hot water combine your dijon and vegetable stock paste.  Stir till combined.  Pour this mixture over your potatoes evenly.  Dollop 3 tbsp. of vegan butter over your potatoes and cover with fin foil.  Bake in the oven covered for 30 minutes and for 35-45 minutes uncovered.  A beautiful bubbly glaze with start to develop so be sure not to let it burn.  Every oven is different so watch this closely to ensure no overcooking happens.  
Enjoy with your favourites vegetables, salads, grains or roasts.


This spice rub is delicious, great for roasting veggies, tofu, beans and more! If you’re not vegan you can also try this spice blend on your choice of protein but I highly suggest trying with veggies for that added flavour and caramelization.


Perfect side dish for a cozy winter meal!

Maria Koutsogiannis

So glad you loved this dish, Megan! Thanks so much for the love!


Could you give an idea which main dish can I eat with?

Maria Koutsogiannis

Any of the main dish recipes on our blog! Your choice of protein and maybe our Fresh Cucumber Salad!

Erin Howler

This was such a delicious and simple recipe! I loved making it. Thanks for the tip about the brown sugar!

Maria Koutsogiannis

It’s really game-changing, so glad you guys enjoyed this!

Stephanie Katz

My boyfriend, Erin, made this for me this weekend and it blew my mind! Thanks for this awesome recipe!

Maria Koutsogiannis

This makes me so happy, Stephanie! Thank you!


So delicious. I modified it a bit this time around but gonna do it the full version again and can’t wait to try it!

Maria Koutsogiannis

Thanks so much for the love, hun!

David Yang

Definitely tried this out because of the beautifully taken photo. Roasting recipes are great when I’m too lazy to full on prepare and cook something, and this recipe was so delicious! The crunchy, soft, savory, and sweet all blended together wonderfully. The mandoline slices is really what made the recipe unique. I am definitely trying that with different veggies next time.

Maria Koutsogiannis

This makes me so happy, David! So glad you enjoyed this dish!

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