Nut Free Sweet Potato Casserole with Marshmallows [eggless]

This nut free sweet potato casserole with marshmallows is a delicious, allergy-friendly dish perfect for Thanksgiving or any fall gathering. Eggless and easily made dairy-free, it features a customizable streusel topping with or without oats and is topped with sweet, gooey mini marshmallows for a classic holiday flavor everyone will love!

Looking for the perfect nut free sweet potato casserole with marshmallows to serve this holiday season? You’ve found it! This recipe is not only nut free but also egg free, making it a safe, allergy-friendly dish that everyone can enjoy.

It’s a simple, versatile, and delicious dish—perfect for Thanksgiving or any fall gathering!

Why Go Eggless?

Many traditional sweet potato casserole recipes call for eggs, but this nut free sweet potato casserole with marshmallows proves you don’t need them! The creamy texture of the sweet potatoes stands strong without eggs, keeping the recipe simple and approachable for anyone with egg allergies.

Dairy-Free Option

If you’re looking to make this casserole dairy-free, it’s easy to swap regular butter for a non-dairy option. Using a plant-based butter alternative won’t compromise the taste or texture of this delicious side dish. You’ll still get that rich, buttery flavor, while keeping it dairy-free for those who need it.

The Streusel Topping: Oats or No Oats?

A highlight of this recipe is the streusel topping. Now, here’s where things get customizable. You can choose to add oats to your streusel for a chewy, nutty texture that mimics the bite you might expect from a traditional nut-filled topping.

If you’re not a fan of oats, simply leave them out! No other adjustments to the recipe are needed—whether you’re team oats or no oats, the streusel will come out perfect every time.

Why Marshmallows on a Sweet Potato Casserole?

Ah, the famous mini marshmallows on top! They’re not just for looks—marshmallows bring a fun, sweet twist to this nut free sweet potato casserole with marshmallows. As they toast in the oven, they become golden, gooey, and irresistibly sweet, balancing the rich, savory sweet potatoes beneath them. People love the contrast between the soft sweet potato filling and the light, fluffy marshmallows on top. Plus, who can resist that nostalgic, comforting feeling of a marshmallow-topped dish at Thanksgiving?

Perfect for Fall and Thanksgiving

This nut free sweet potato casserole with marshmallows is the ultimate side dish for fall, especially during Thanksgiving. The sweet and savory combo, topped with the irresistible crunch of streusel and soft marshmallows, makes it a hit at any family table. With simple ingredients and a quick preparation, this dish will be a go-to all season long.

How to make the best Nut Free Sweet Potato Casserole with Marshmallows

Preheat the oven to 350F.

Peel and dice the sweet potatoes into 1 inch chunks

Cover potatoes with salted water and bring to low boil; cook until soft and tender enough for a fork to pierce easily.

Drain the potatoes, then add butter (I like to break into about 1 tbsp. pieces) and mash well.

Next add brown sugar cinnamon or pumpkin pie spice and salt to the mashed sweet potato mixture. Stir well incorporating all ingredients. Smooth the top.

In a separate bowl, combine the oat streusel topping. Mix well, (I find it easiest to use hands.)

Crumble the topping across the smoothed out sweet potato mixture.

Bake for 15 minutes then remove and add mini marshmallows, increasing temperature to 425F, cooking until marshmallows melt or are golden brown, whatever your preference—about 5-10 minutes.

Things that helped in the kitchen for this recipe, and can help you too:

Le Creuset dutch oven – Amazon – Mine is old as sin, and still gets used weekly. If you can invest in one, I highly recommend it. If you’re lucky enough to live near a Williams and Sonoma outlet, you might find one for a good deal!

Kitchen scale -from amazon, this one I used for 1-2 years, it is inexpensive but gets the job done! 

As an Amazon Associate I earn from qualifying purchases. This comes at no cost to you, just like a free Disney travel agent. I’m only here to make suggestions that hopefully help you 🙂

Nut Free Sweet Potato Casserole with Marshmallows

5 from 1 vote

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Ingredients

  

• 4 medium-large sized sweet potatoes (about 650g) peeled and diced into one inch pieces

For the Sweet Potato filling

• 1/2 cup butter
• 1/4 cup brown sugar
• 1/4 teaspoon cinnamon OR pumpkin pie spice your preference
• 1/4 teaspoon sea salt

Streusel/ Oat Crumb Topping

• 1/4 cup brown sugar
• 2 tablespoons all purpose flour
• 1/4 cup rolled oats optional
• 2 tablespoons butter softened
• 1/2 teaspoon cinnamon

Mini Marshmallows

• 1 Cup Mini marshmallows

Instructions

 

• Preheat the oven to 350F.
• Peel and dice the sweet potatoes into 1 inch chunks
• Cover potatoes with salted water and bring to low boil; cook until soft and tender enough for a fork to pierce easily.
• Drain the potatoes, then add butter (I like to break into about 1 tbsp. pieces) and mash well.
• Next add brown sugar, cinnamon or pumpkin pie spice and salt to the mashed sweet potato mixture. Stir well incorporating all ingredients. Smooth the top.
• In a separate bowl, combine the oat streusel topping. Mix well, (I find it easiest to use hands.)
• Crumble the topping across the smoothed out sweet potato mixture.
• Bake for 15 minutes then remove and add mini marshmallows, increasing temperature to 425F, cooking until marshmallows melt or are golden brown, whatever your preference—about 5-10 minutes.