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Sweet Potato Casserole is full of perfectly cooked Sweet Potatoes, Cinnamon, Brown Sugar, and of course, MARSHMALLOWS! Making this Sweet Potato Casserole should be on everyone’s Thanksgiving to do list.

Sweet Potato Casserole Recipe

Easy Sweet Potato Casserole

Sweet potatoes covered in butter, brown sugar and marshmallows, bringing you that sweet and savory flavor that is so delicious you honestly wrestle with your mind. Is this a dessert, or is this a side dish? It’s a little of both worlds, and most homes don’t have this dish on their tables enough.

Every year on Thanksgiving you can go from eating turkey to savory sausage stuffing to creamy mashed potatoes, tart cranberry sauce and then double back for a huge scoop of sweet potato casserole. Leaving your tastebuds to explore all of the best flavor profiles before giving them that small break before “the real” desserts like pie. The sweet potato casserole acts as a great transitioning dish to get you in the mood for more sweets.

Easy Sweet Potato Casserole

What Are the Ingredients in This Sweet Potato Casserole?

Here’s a look at the ingredients you’re going to want to have on hand to make this tasty sweet side dish!

  • Sweet potatoes 
  • Butter
  • Brown sugar
  • Cinnamon
  • Marshmallows

The exact measurements and steps to take are all shared in the recipe card below!

How to Make Sweet Potato Casserole

Peel and dice your already baked sweet potatoes. You can bake them the day before and keep them in the fridge for less prep time. They’ll also cut easier when they’re cold. I like to make my Sweet Potatoes in the Instant Pot

Now arrange your diced potatoes around the bottom of an 8×8 baking dish or something similar. 

sweet potatoes in a dish with butter for a sweet potato casserole

Slice your butter into small portions and place them on top of your sweet potatoes. Separately, mix the brown sugar with the cinnamon and then sprinkle it over the top of your sweet potatoes.

Cover the dish with foil and then bake for about 15 minutes at 350 degrees. If you started with cold sweet potatoes, bake for 25 minutes.

After the timer has gone off, pull it out from the oven, remove the foil, and then add the marshmallows to the top. Broil until the top is golden brown (this happens quickly, so keep an eye on it!)

Sweet potato casserole served

Can I Freeze Sweet Potato Casserole?

If you want to prepare your sweet potato mix in advance, bake it as directed, without the marshmallows. Then cool completely, wrap tightly to make it air-tight and then store it in your freezer for up to 3 months. When you are ready to bake it, take it out and allow it to either thaw overnight in the fridge. Then bake as directed initially, adding the marshmallows and broiling just before serving.

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Sweet Potato Casserole Recipe

Sweet Potato Casserole is full of perfectly cooked Sweet Potatoes, Cinnamon, Brown Sugar, and of course, MARSHMALLOWS! Making this Sweet Potato Casserole should be on everyone's Thanksgiving to do list.
Prep Time: 15 minutes
Cook Time: 15 minutes


  • 2 large sweet potatoes, baked
  • 2 tbsp butter
  • 1/3 cup brown sugar
  • 3/4 tsp cinnamon
  • 1 1/2 cups marshmallows


  • Peel and dice the baked sweet potatoes. Arrange in the bottom of an 8x8 dish.
  • Slice the butter into small portions and place on top of the sweet potatoes.
  • Mix together the brown sugar and cinnamon, sprinkle on top of the sweet potatoes
  • Cover with foil and bake for 15 minutes at 350° (if the potatoes were cold to start with, increase to 25 minutes)
  • Add the marshmallows on top, broil until golden brown (watch closely, this happens quickly!!)


Calories: 1430kcal | Carbohydrates: 302g | Protein: 13g | Fat: 24g | Saturated Fat: 15g | Cholesterol: 61mg | Sodium: 688mg | Potassium: 2389mg | Fiber: 21g | Sugar: 164g | Vitamin A: 97181IU | Vitamin C: 16mg | Calcium: 284mg | Iron: 5mg
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About Karli Bitner

This blog is a little glimpse into my kitchen, family & life. I hope you’ll giggle the days away with me and enjoy the craziness that goes on at my house. If you are Cookie obsessed like I am, check out my Sister Site, Cookies for Days.

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