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Irresistibly Creamy Sweet Potato Casserole for Holidays

Published: Jul 29, 2025 by Dia Martinez · This post may contain affiliate links · Leave a Comment

As I whisked together the vibrant orange sweet potatoes, warmth and nostalgia filled the air, reminding me of countless family gatherings where laughter mingled with the rich aromas of cinnamon and nutmeg. This Classic Sweet Potato Casserole with Marshmallow Topping isn’t just a side dish; it’s the heartbeat of any holiday celebration, offering comfort and joy to all who gather around the table. The delightful part? It’s incredibly simple to whip up, making it the perfect choice for busy home chefs. With options for vegan substitutions, this casserole can cater to every dietary preference, ensuring that everyone leaves the table with satisfied smiles. Are you ready to discover how this beloved dish can elevate your next meal?

Why is Sweet Potato Casserole a Must-Try?

Comforting, Familiar Flavors: The warm blend of sweet potatoes, cinnamon, and nutmeg envelops you in a nostalgic embrace that screams home-cooked goodness.

Crowd-Pleaser: This casserole shines during holidays, delighting both kids and adults alike. Add it to your festive table and watch it disappear!

Versatile Options: Whether you're vegan or love traditional recipes, this dish adapts beautifully with simple ingredient swaps. Try it with plant-based milk or vegan marshmallows to create a dish for everyone.

Easy Preparation: With minimal cooking skills required, you can whip this up quickly, making it a stress-free choice for busy chefs.

Amazing Texture: Imagine a smooth, creamy filling contrasted with a crispy, golden marshmallow topping that brings a satisfyingly delightful crunch.

Sweet Potato Casserole Ingredients

For the Casserole
• Sweet Potatoes – These creamy gems are the foundation of your casserole, so make sure they're peeled and cubed for the best texture!
• Milk – A splash of milk binds everything together; use any plant-based milk for a delicious vegan Sweet Potato Casserole.
• Brown Sugar – This sweetener adds depth and richness; feel free to experiment with alternative sweeteners to fit your taste.
• Melted Butter – For added richness, but swap it out with vegan butter if you're keeping things dairy-free.
• Egg – Helps the mixture stick together; substitute with a flax egg for a vegan version without compromising texture.
• Cinnamon & Nutmeg – These spices infuse warmth and flavor; adjust according to your own comfort level with spices!
• Vanilla Extract – A little dash enhances sweetness; no need for substitutions here!
• Salt – A pinch of salt balances out the sweetness beautifully.

For the Topping
• Mini Marshmallows – These sweet little clouds melt perfectly on top, but opt for vegan marshmallows if you prefer!
• Streusel Topping – A crunchy mix of flour, brown sugar, and butter; pre-toast for an extra delightful crunch if you wish!

Step‑by‑Step Instructions for Sweet Potato Casserole

Step 1: Preparation
Begin by peeling and cubing about 3-4 sweet potatoes, roughly 2 pounds, and placing them into a large pot of water. Bring the water to a boil over high heat and cook the sweet potatoes until they are fork-tender, which takes around 15-20 minutes. Drain the cooked sweet potatoes and let them cool slightly, ensuring you can handle them safely.

Step 2: Mashing
Transfer the drained sweet potatoes to a mixing bowl and mash them using a potato masher or electric mixer until smooth. Incorporate ½ cup of milk, ½ cup of brown sugar, ¼ cup of melted butter, 1 beaten egg, 1 teaspoon of cinnamon, ½ teaspoon of nutmeg, 1 teaspoon of vanilla extract, and a pinch of salt. Mix until fully combined and creamy, creating a rich base for your Sweet Potato Casserole.

Step 3: Baking
Preheat your oven to 350°F (175°C). Grease a 9x13-inch casserole dish with cooking spray or butter. Spread the smooth sweet potato mixture evenly in the prepared dish. If you're prepping in advance, you can cover the casserole with plastic wrap and refrigerate it until you're ready to bake. Otherwise, slide it directly into the oven.

Step 4: Topping
While the casserole is baking for about 25-30 minutes, prepare the streusel topping. In a separate bowl, mix together ½ cup of flour, ½ cup of brown sugar, and ¼ cup of melted butter until crumbly. You can add optional chopped pecans for a delightful crunch if desired. Once the casserole has set, remove it from the oven to add a layer of mini marshmallows on top before sprinkling the streusel mixture over them.

Step 5: Final Bake
Return the assembled casserole to the oven, baking again for 10-15 minutes, or until the marshmallows are golden brown and the streusel is crisp. Keep a close eye on it to ensure the marshmallows don’t burn. The Sweet Potato Casserole should now be beautifully golden and ready to impress your guests!

Step 6: Finishing Touch
For an extra touch, broil the casserole for an additional 1-2 minutes after the final bake, keeping a close watch to achieve that toasty marshmallow effect. Once done, remove it from the oven, let it rest for a few minutes, and serve warm. Your family and friends will be delighted with this exquisite Sweet Potato Casserole!

What to Serve with Sweet Potato Casserole?

There's something truly magical about gathering around a table filled with comforting dishes that resonate with warmth and sharing.

  • Roast Turkey: A classic pairing that adds savory depth to the sweet and creamy flavors of the casserole. The contrast between succulent turkey and sweet potatoes creates a delightful harmony.

  • Glazed Ham: The sweet glaze complements the Sweet Potato Casserole beautifully, making each bite a festive celebration of flavors. This duo is a staple on holiday tables, delightful for every palate.

  • Green Bean Almondine: Crisp green beans tossed with toasted almonds offer a refreshing crunch that balances the casserole's smoothness, creating an inviting variety on your plate.

  • Cranberry Sauce: The tartness of fresh cranberry sauce cuts through the sweetness, brightening each mouthful and adding an essential touch of contrast to the meal.

  • Cornbread: Soft, buttery cornbread adds a comforting, rustic element that pairs beautifully with the rich, creamy casserole. It’s perfect for sopping up all those delightful flavors!

  • Mixed Green Salad: A light salad with a citrus vinaigrette provides a refreshing, zesty contrast, ensuring a balanced meal that invigorates the palate.

  • Sparkling Cider: For drinks, a crisp, sparkling cider offers a festive touch while complementing the sweetness of the casserole without overpowering it.

  • Pumpkin Pie: Finish your meal with a classic dessert! The spiced pumpkin pie echoes the warm flavors of the casserole, making it a sweet ending to your gathering.

Storage Tips for Sweet Potato Casserole

Fridge: Store leftovers in an airtight container for up to 3 days; the flavors deepen as the casserole sits, creating a delightful dish to enjoy again.

Freezer: Freeze the casserole without the marshmallow topping for up to 2 months. Thaw it in the fridge overnight before reheating for the best results.

Reheating: When ready to serve, cover with foil and warm in a 350°F oven until heated through. Add marshmallows, then broil briefly for a toasty, scrumptious finish!

Expert Tips for Sweet Potato Casserole

  • Perfect Sweet Potatoes: Choose firm and fresh sweet potatoes for the best flavor. Avoid any with soft spots or blemishes, as they can affect the dish's texture.

  • Smooth Texture: Use an electric mixer instead of a potato masher for a super creamy filling. This small change makes a big difference in your Sweet Potato Casserole!

  • Advance Prep: To save time, cube and soak sweet potatoes in cold water a day ahead. This keeps them fresh and speeds up your cooking process.

  • Crispy Topping: Lightly toast your streusel topping before adding it to the casserole for an extra crunch. This simple trick makes your casserole even more irresistible.

  • Watch the Marshmallows: Keep a close eye during the final bake—marshmallows can burn quickly. Broil briefly for a toasted finish, but step away to monitor closely.

Make Ahead Options

These Sweet Potato Casserole preparations are perfect for busy home cooks looking to save time! You can peel and cube the sweet potatoes up to 24 hours in advance, storing them submerged in cold water in the refrigerator to prevent browning. Additionally, you can fully assemble the casserole by mixing the mashed sweet potatoes and spreading them in the baking dish, then cover and refrigerate for up to 3 days. When you're ready to serve, simply preheat your oven and bake the casserole until heated through, then add the toppings and bake again until golden. This way, you’ll enjoy a delightful Sweet Potato Casserole that’s just as delicious and comforting with minimal effort!

Sweet Potato Casserole Variations

Feel free to tweak this classic recipe and make it your own, adding unique flavors and textures that will excite your taste buds!

  • Dairy-Free: Use any plant-based milk and vegan butter in place of dairy for a creamy yet guilt-free casserole.
    The richness remains while catering to those avoiding dairy. Don't forget to swap in vegan marshmallows for the perfect finish.

  • Nutty Crunch: Toss in ½ cup of chopped pecans or walnuts into the streusel topping for an extra delightful crunch.
    Nuts not only enhance the texture but also add a nutty flavor that complements the sweet potatoes beautifully.

  • Sweet Potato Variations: Mix in other root vegetables like butternut squash or carrots for a twist on the classic flavor.
    These alternatives add a delightful complexity and nutritional benefits, giving your casserole a colorful lift!

  • Maple Glaze: Replace brown sugar with pure maple syrup or honey for a more nuanced sweetness.
    The maple adds a lovely depth that pairs perfectly with the warm spices, elevating your dish to new heights.

  • Cinnamon Roll Topping: For a fun twist, add cinnamon swirl to the mashed sweet potatoes or layer it within the casserole.
    Imagine the warm aroma of cinnamon rolls wafting through your home, enticing everyone to gather around!

  • Spicy Kick: Add a pinch of cayenne pepper or chipotle powder to the sweet potato mixture for a subtle heat.
    This unexpected twist plays beautifully against the sweet layers, creating a well-rounded flavor profile everyone will love.

  • Fluffy Fluff: Swap mini marshmallows for marshmallow fluff for a smoother, creamier topping.
    This will create a unique presentation, making the casserole even more inviting and delightful.

  • Fruit Fusion: Incorporate cranberries or raisins into the mix for bursts of sweet and tart flavor.
    This addition introduces a lovely contrast to the sweetness of the potatoes, making every bite a delightful surprise.

Tailor this Sweet Potato Casserole to your family's tastes and enjoy the smile it brings to the dinner table!

Sweet Potato Casserole Recipe FAQs

What kind of sweet potatoes should I use?
Absolutely! Look for firm and fresh sweet potatoes without any soft spots or blemishes. The best ones are smooth and vibrant in color, ensuring a richer flavor for your casserole.

How should I store leftovers from the casserole?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. The flavors actually develop over time, making it an even more delightful dish to enjoy later!

Can I freeze the Sweet Potato Casserole?
Yes, you can! I recommend freezing it without the marshmallow topping for up to 2 months. Just cover the casserole tightly with plastic wrap and then foil. When you're ready, let it thaw in the refrigerator overnight before reheating.

What if my casserole is too dry or too wet?
If your filling turns out too dry, you can mix in a little more milk to achieve the desired creaminess. On the other hand, if it’s too wet, you can add a bit more mashed sweet potato or a sprinkle of flour to thicken it up. Remember, each batch of sweet potatoes can vary in moisture content, so it's perfectly fine to adjust as needed!

Are there any dietary considerations I should keep in mind?
If you’re catering to dietary preferences, feel free to substitute with plant-based milk, vegan butter, and flax eggs! Also, check if any guests have allergies to nuts, as the optional pecans in the topping can be an allergen. Making sure everyone can enjoy your Sweet Potato Casserole is a great way to show you care!

How do I achieve a perfectly toasted marshmallow topping?
Very! After baking, to achieve a beautifully toasted marshmallow topping, you can broil the casserole for just 1-2 minutes. Just be sure to keep a close eye on it to prevent burning, as marshmallows can caramelize quickly and go from perfect to charred in no time!

Sweet Potato Casserole

Irresistibly Creamy Sweet Potato Casserole for Holidays

This Sweet Potato Casserole is a must-try holiday dish, offering creamy textures and nostalgic flavors.
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 45 minutes mins
Total Time 1 hour hr 5 minutes mins
Servings: 8 servings
Course: dinner
Cuisine: American
Calories: 300
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 2 pounds Sweet Potatoes peeled and cubed
  • ½ cup Milk or plant-based milk
  • ½ cup Brown Sugar
  • ¼ cup Melted Butter or vegan butter
  • 1 large Egg or flax egg for vegan option
  • 1 teaspoon Cinnamon
  • ½ teaspoon Nutmeg
  • 1 teaspoon Vanilla Extract
  • 1 pinch Salt
For the Topping
  • 2 cups Mini Marshmallows or vegan marshmallows
  • ½ cup Flour
  • ½ cup Brown Sugar
  • ¼ cup Melted Butter

Equipment

  • pot
  • mixing bowl
  • electric mixer
  • casserole dish

Method
 

Step‑by‑Step Instructions
  1. Peel and cube the sweet potatoes, place them in a large pot of boiling water, and cook until fork-tender, about 15-20 minutes. Drain and cool slightly.
  2. Mash the sweet potatoes in a mixing bowl. Add milk, brown sugar, melted butter, beaten egg, cinnamon, nutmeg, vanilla extract, and salt. Mix until creamy.
  3. Preheat oven to 350°F (175°C). Grease a 9x13-inch casserole dish. Spread sweet potato mixture in the dish; cover and refrigerate if prepping in advance.
  4. Prepare the streusel topping by mixing flour, brown sugar, and melted butter until crumbly. Optionally add chopped pecans.
  5. After baking the casserole for 25-30 minutes, remove it, add mini marshmallows, then sprinkle the streusel over them.
  6. Return to oven and bake for another 10-15 minutes until marshmallows are golden and streusel is crisp.
  7. Broil for an additional 1-2 minutes for a toasted effect. Let rest before serving.

Nutrition

Serving: 1servingCalories: 300kcalCarbohydrates: 50gProtein: 3gFat: 12gSaturated Fat: 7gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gCholesterol: 35mgSodium: 200mgPotassium: 400mgFiber: 4gSugar: 25gVitamin A: 10000IUVitamin C: 20mgCalcium: 80mgIron: 1mg

Notes

Store leftovers in an airtight container for up to 3 days, or freeze without marshmallow topping for up to 2 months.

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I'm a passionate home cook and recipe developer who has been creating and testing family-friendly recipes for over 8 years. Every recipe on DiaRecipes is tested multiple times in my own kitchen before sharing it with you

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