This simple sweet potato casserole is a classic dish that’s delicious and so easy to make! This recipe is perfect for weeknight dinners or special occasions, and it’s easily doubled for a crowd.

With just a few pantry staples and a little time, you’ll have a comforting sweet potato casserole that’s sure to please. Get ready to indulge in the gooey goodness of this classic comfort food!
This is a super easy recipe to prep ahead… I serve this sweet potato casserole every thanksgiving with Oven roasted turkey, grandmas stuffing, easy green bean casserole, rick pumpkin pie, and maple pecan pie!

Simple Ingredients
This recipe makes 8 servings… Double it for a crowd! You’ll need about 20 minutes of prep time and an hour and 20 minutes of cook time.
- 6 LARGE sweet potatoes
- 1/2 cup unsalted butter, melted
- 1/2 cup packed brown sugar
- 1/4 cup maple syrup
- 2 teaspoons vanilla extract
- 1/4 teaspoon salt
- 3 cups marshmallows, (tip: mini marshmallows spread out better over sweet potatoes.)

How to Make Sweet Potato Casserole with Marshmallows
Prepare Sweet Potatoes: Preheat your oven to 400°F (200°C). Scrub the sweet potatoes clean and pierce them a few times with a fork. put your sweet potatoes right on the oven rack. And bake them for about 50-60 minutes… Until they’re tender when pierced with a fork.
Make Your Sweet Potato Filling: Let the baked sweet potatoes cool till they’re easy to handle… But don’t let them cool all the way, or they’re harder to mash.
Cut your cooked sweet potatoes in half, and scoop out the flesh into a large bowl.
use a fork or potato masher to mash the sweet potatoes until they’re a nice smooth texture.
Add the melted butter, brown sugar, real maple syrup, vanilla extract, and salt to the mashed sweet potatoes.
Use a rubber spatula to mix all the ingredients together till they’re combined.
If you are prepping this ahead of time, don’t add the marshmallows till right before baking!
Assemble the Sweet Potato Casserole: Place sweet potato mixture into a 9×13 or 7×11 baking dish. Top generously with marshmallows.

Bake & Serve: Bake in a 400 degree preheated oven for 20 minutes, until the marshmallows are golden brown and bubbly… Let it cool for about 10 minutes. Serve warm and enjoy!
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Sweet Potato Casserole Recipe Card
If you use this recipe… I’d really appreciate a star rating or a review in the comments below! Thank YOU!

Classic Sweet Potato Casserole with Marshmallows
Ingredients
- 6 LARGE sweet potatoes – make sure the sweet potatoes are similar in size for even cooking. If they’re uneven you may need to adjust the baking time.
- 1/2 cup unsalted butter melted
- 1/2 cup packed brown sugar
- 1/4 cup maple syrup
- 2 teaspoons vanilla extract
- 1/4 teaspoon salt
- 3 cups marshmallows (tip: mini marshmallows spread out better over sweet potatoes.)
Instructions
- Preheat your oven to 400°F (200°C).
- Scrub the sweet potatoes clean and pierce them a few times with a fork.
- Put your sweet potatoes right on the oven rack. And bake them for about 50-60 minutes… Until they're nice and tender when pierced with a fork.
- Next, make the sweet potato filling: Let the baked sweet potatoes cool till their easy to handle… But don't let them cool all the way, or they're harder to mash.
- Slice the sweet potatoes in half, and scoop out the flesh into a large bowl. Discard or compost skins.
- Use a fork or potato masher to mash your sweet potatoes until they're a nice and smooth texture.
- Next, add the melted butter, brown sugar, real maple syrup, vanilla extract, and salt to the bowl of mashed sweet potatoes.
- Use a rubber spatula to mix all the ingredients together till they're combined.
- Place sweet potato mixture into a 9×13 or 7×11 baking dish, and top them generously with marshmallows.
- Bake in your preheated 400 degree oven for about 20 minutes…. Until the marshmallows are golden brown and bubbly!
- Remove to a cooling rack, and let it cool for about 10 minutes.
- Serve warm and enjoy!
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