Sweet Potato Casserole with Marshmallows

This easy Sweet Potato Casserole is topped with marshmallows and a brown sugar streusel topping. It’s so easy to make, and kids always love it! It’s a Ruth’s Chris Copycat gone wild, so if you love their famous Sweet Potatoes then jump in, and let’s get cooking!

This recipe is undeniably the best marshmallow sweet potato casserole on earth. We just made it again for Thanksgiving, and it was my favorite side dish this year. In fact, I’m going to make it again for Christmas and I think you all should too! They are great for Easter too!

Sweet Potato Souffle with Marshmallows

Several years ago, I remember making this recipe with our four-year-old. She was so excited about making it, that she had call Cade, with my supervision of course, to tell him that SHE just made the best dinner ever. It’s definitely not “dinner” as we had more than just sweet potato casserole for dinner, and she most certainly did not make it all by herself, but the girl did quite a bit! And she loved it! 

Can all of us moms have a moment of silence for a toddler who loved something that would become dinner? Not just ate it, but loved it! Alright, that could have something to do with the amount of sugar and marshmallows in this dish, but I won’t tell if you won’t. 

I used to hate “yams” at Thanksgiving because they were an awful orange, dripping with some weird syrup (gag!), and they tasted like grossness with burned, flat, hard marshmallows on top.

Now I know better. Now I know that it was the person bringing them that was the problem, bless their hearts (that’s what you say to make a mean thing sound better). Sweet potatoes are awesome, they just need to be cooked correctly and if you must do the marshmallow thang, well let’s just do it my way at least. 

Make the sweet taters into a souffle (easy peasy, so don’t get nervous on me…a potato ricer is a game changer) and then use both marshmallows and a brown sugar streusel on top. Trust me, your guests will be BEGGING for the recipe.

Sweet Potato Casserole Ingredients

To make this easy sweet potato casserole recipe with marshmallows, you’ll need: 

• Sweet Potatoes
• Egg
• Unsalted Butter
• Salt 
• White sugar
• Brown sugar
• Cinnamon 
• Vanilla Extract
• Milk
• Mini Marshmallows
• All-Purpose Flour
• Panko Bread Crumbs
• Graham Cracker Crumbs

The measurements for all the ingredients can be found in the recipe card at the end of this post. You can save or print the recipe there as well.

How to Make Sweet Potato Casserole

This sweet potato recipe might not be as easy as dumping canned yams into a casserole dish and topping them with marshmallows, but it’s pretty easy nonetheless! Here’s how to make this sweet potato dish: 

1. Bake the sweet potatoes until tender. 
2. Peel the sweet potatoes, then mash them in a bowl using a potato masher. 
   • PRO TIP: If you have potato ricer, use that on your sweet potatoes to make them extra silky smooth!
3. Mix in the egg, butter, salt, sugars, cinnamon, milk, and vanilla using a wooden spoon or hand mixer. 
4. Turn the mixture into a baking dish, then bake for 30 minutes. 
5. Remove from oven and top with marshmallows and streusel topping, then return to oven for 20 minutes. 
6. Let the sweet potato casserole cool for 10 minutes before serving it. 

The complete instructions can be found down below in the recipe so keep scrolling for all the details.

Can I Use Canned Sweet Potatoes? 

Yes, you can make this sweet potato recipe with canned sweet potatoes if desired. Just make sure to drain them really well before mashing them. 

Can I Add Nuts to This Sweet Potato Casserole? 

If you prefer your sweet potato casserole with nuts, feel free to sprinkle some on top when you add the marshmallows. Pecans and walnuts would both work nicely here. 

Tips for Making Sweet Potato Casserole

When you first roast the sweet potatoes, you want them to be super soft before mashing them. I can usually tell when my sweet potatoes are finished because they start leaking juice once soft. 

Because the sweet potato mixture is like a souffle, you must include the egg. I don’t know of a way to omit the eggs and still have the texture come out right. 

If you don’t have mini marshmallows on hand, you’re welcome to chop up regular sized marshmallows and use those instead.  

Can Sweet Potato Casserole Be Made Ahead of Time?

Want to make this marshmallow sweet potato casserole ahead of time? Follow these make ahead instructions…You can bake the potatoes and mash them days ahead and store in the fridge in an airtight container. You can make the crumble topping ahead of time too and store in a Ziploc bag, even a month ahead, and store in the freezer. The day before, you can make the souffle and store in the refrigerator. Bake this sweet potato casserole on the day of in order to avoid yucky marshmallows.

Can Sweet Potato Casserole Be Frozen?

Yes, follow all the instruction for making the souffle and freeze it without the marshmallow and streusel topping. When you’re ready to bake it, let it thaw and then add the toppings and bake as directed.

How to Reheat Sweet Potato Casserole

If you want to reheat a whole casserole, stick it in the oven and warm it up at 300 degrees until heated through. To reheat just a serving, I prefer to just zap it in the microwave.

This is the best sweet potato casserole recipe and it couldn’t be easier to make! The flavor is irresistible and it’s the one holiday side dish that could pass as a dessert. I can’t wait for you to taste this one!

More Thanksgiving Side Dishes: 

• Lemon Mandarin Orange Jello Salad
• Southern Grape Salad with Pecans
• Instant Pot Southern Macaroni and Cheese
• Southern English Pea Salad
• The Best Deviled Eggs Recipe
• The Best Mashed Potatoes
• Southern Macaroni and Cheese

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