As the aroma of sweet and buttery goodness wafts through your kitchen, you’ll find it hard to resist the allure of this Heavenly Sweet Potato Casserole with Marshmallow Topping. One bite of this delightful dish, with its creamy, spiced sweet potatoes beneath a warm, gooey layer of toasted marshmallows, takes me back to the most cherished family gatherings. This easy recipe not only promises to be a crowd-pleaser but is also perfect for those busy holiday prep days when time is of the essence. Whether you’re new to cooking or a seasoned home-chef, this comforting casserole delivers both flavor and nostalgia effortlessly. Are you ready to elevate your holiday table with a dish that sparks joy in every bite? Let’s dive into the details!

Why is Sweet Potato Casserole a Must-Try?
Crowd-Pleasing Appeal: This Sweet Potato Casserole is a guaranteed hit at any gathering, charming both kids and adults alike.
Comfort Food Classic: Its blend of creamy sweet potatoes and gooey marshmallows invokes warm memories of holidays and family get-togethers.
Easy to Make: Even if you’re new to cooking, this straightforward recipe will impress your guests without overwhelming you.
Versatile Ingredient Options: Feel free to swap in alternatives like Maple Sweet Potato or add a splash of bourbon to take it up a notch!
Delicious Leftovers: Store any leftovers (if there are any!) in the fridge and reheat for a quick and tasty snack.
Perfect Pairing: Serve alongside your favorite dishes like Garlic Roast Potatoes or a zesty Steakhouse Potato Salad for a well-rounded meal.
Sweet Potato Casserole Ingredients
For the Casserole
• Sweet Potatoes – The heart of this Sweet Potato Casserole, providing natural sweetness and a creamy texture. Substitution: Canned sweet potatoes can save time.
• Light Brown Sugar – Adds a rich, caramelized flavor to the filling. Substitution: Maple syrup for a more profound sweetness.
• Butter – Delivers moisture and richness to the mixture. Substitution: Coconut oil for a dairy-free alternative.
• Vanilla Extract – Enhances the sweetness and depth of flavor. Note: Pure vanilla extract gives the best taste.
• Cinnamon – Adds warmth and spice, perfectly complementing the sweet potatoes. Note: Pumpkin pie spice can also work well.
• Salt – Balances the sweetness and enhances the overall flavors. Essential for flavor cohesion.
• Nutmeg – Introduces a distinctive, aromatic spice. Optional: Omit for a simplified flavor.
For the Topping
• Mini Marshmallows – Create a sweet and gooey topping that caramelizes beautifully during baking. Note: Vegan marshmallows can be used for a plant-based version.
Your journey to creating this heavenly Sweet Potato Casserole is just a step away with these delightful ingredients!
Step‑by‑Step Instructions for Heavenly Sweet Potato Casserole with Marshmallow Topping
Step 1: Prepare Sweet Potatoes
Begin by peeling and chopping three to four large sweet potatoes into roughly equal-sized chunks. Place them in a large pot of boiling water and let them cook for about 15-20 minutes, or until tender when pierced with a fork. Drain the sweet potatoes and set them aside to cool slightly before mashing.
Step 2: Mash Filling
In a large mixing bowl, combine the drained sweet potatoes with 4 tablespoons of butter, 1/2 cup of light brown sugar, a pinch of salt, 1 teaspoon of cinnamon, 1 teaspoon of vanilla extract, and a dash of nutmeg if desired. Using a potato masher or electric mixer, blend the mixture until it is smooth and creamy, bringing all those delightful flavors together.
Step 3: Prepare Baking Dish
While you’re mashing the sweet potato filling, preheat your oven to 350°F (175°C). Grab a 9×13-inch baking dish and lightly grease it with cooking spray or softened butter to ensure easy serving. This step is essential for preventing the casserole from sticking as it bakes.
Step 4: Assemble Casserole
Spread the creamy sweet potato mixture evenly into the greased baking dish, smoothing the top with a spatula. Once the mixture is evenly distributed, generously sprinkle a layer of mini marshmallows over the top, making sure to cover the sweet potatoes completely for that irresistible gooeyness.
Step 5: Bake
Place your prepared sweet potato casserole in the preheated oven and bake for 25-35 minutes. Keep an eye on it, as you want the marshmallows to turn golden brown and the filling to become bubbly. This is when the heavenly aroma will fill your kitchen, promising a delightful taste ahead.
Step 6: Optional Broil
If the marshmallows aren’t as golden as you like after baking, you can place the casserole under the broiler for a few seconds for an extra touch of browning. Be vigilant during this process, as marshmallows can quickly go from perfectly toasted to charred if left unattended.
Step 7: Serve and Enjoy
Once baked to perfection, remove the Heavenly Sweet Potato Casserole from the oven and allow it to cool for a few moments before serving. This short wait helps the filling to set up slightly, creating the perfect balance of creamy and gooey. Serve warm as a delightful side dish for any gathering.

Sweet Potato Casserole Variations
Feel free to get creative with this Sweet Potato Casserole; every addition brings a new delightful twist to this comforting classic!
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Nutty Crunch: Sprinkle chopped pecans or walnuts on top for a delightful crunch that complements the smooth filling.
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Bourbon Bliss: Add a splash of bourbon to the sweet potato mixture for a rich, festive kick that will surely impress guests.
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Fruit Fusion: Incorporate chopped apples or pears for a refreshing twist that adds sweetness and a lovely texture contrast to the dish.
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Maple Magic: Swap light brown sugar for maple syrup to deepen the flavor profile and introduce a warm, caramelized taste.
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Coconut Cream: Use coconut oil instead of butter for a dairy-free version that still delivers that luscious richness.
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Pumpkin Spice: Replace cinnamon with pumpkin pie spice for a cozy, autumnal vibe that’s perfect for holiday gatherings.
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Spicy Heat: Add a dash of cayenne pepper or paprika to the sweet potato mixture for a surprising kick that balances out the sweetness.
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Cream Cheese Surprise: Fold in a bit of cream cheese into the sweet potato mixture for an extra creamy texture and delightful tang.
For even more delicious inspiration, you might want to check out my Maple Sweet Potato recipe for different flavors, or try pairing it with a zesty Steakhouse Potato Salad for your next family gathering!
Make Ahead Options
These Heavenly Sweet Potato Casserole with Marshmallow Topping recipes are perfect for busy weeknights or holiday meal prep! You can prepare the sweet potato filling up to 24 hours in advance. Simply follow the instructions to peel, chop, and boil the sweet potatoes, then mash them with the other ingredients and store the mixture in an airtight container in the refrigerator. When you’re ready to bake, spread the mixture in your greased baking dish, add the mini marshmallows, and pop it in the oven. For the best results, allow the casserole to sit at room temperature for a bit before baking to ensure even cooking. This approach saves you precious time while delivering a dish that will evoke warm memories and smiles at the dinner table!
Expert Tips for Sweet Potato Casserole
• Watch the Marshmallows: Keep a close eye on the casserole during the final minutes of baking to prevent marshmallows from burning. Golden brown is the goal!
• Crumbly Crunch: For an extra texture contrast, try adding chopped pecans or walnuts on top of the marshmallows before baking. This enhances both taste and presentation.
• Cooling Time: Let the casserole cool for a few minutes after baking. This helps the filling set up nicely, making it easier to serve and enjoy!
• Flavor Variations: Consider a splash of bourbon for a festive twist or add chopped fruits like apples for added sweetness and a bit of acidity to balance the dish.
• Storage Tips: Store any leftovers in an airtight container for up to 4 days. Reheat in the oven to keep the marshmallow topping delicious and gooey.
How to Store and Freeze Sweet Potato Casserole
Refrigerator: Store leftovers in an airtight container in the fridge for up to 4 days. This keeps the casserole delicious and fresh for you to enjoy later.
Freezer: For longer storage, sweet potato casserole can be frozen for up to 3 months. Wrap it tightly in plastic wrap and aluminum foil to prevent freezer burn.
Reheating: When ready to enjoy, thaw the casserole overnight in the fridge, then reheat in the oven at 350°F (175°C) until warmed through. This will help restore the marshmallow topping’s delightful gooeyness.
Serving Idea: If you have extra marshmallows or toppings, feel free to add a fresh layer before reheating for an even more indulgent experience!
What to Serve with Heavenly Sweet Potato Casserole?
There’s nothing quite like creating a cozy meal experience that tantalizes the senses and brings loved ones together.
- Garlic Roast Potatoes: The crispy, golden potatoes provide a hearty contrast to the creamy casserole, balancing flavors and textures beautifully.
- Zesty Cranberry Sauce: Its bright, tart flavor cuts through the sweetness of the casserole, adding a refreshing twist worth savoring with every bite.
- Honey-Glazed Carrots: These tender, sweet carrots bring a delightful pop of color and taste to your plate, complementing the natural sweetness of sweet potatoes.
- Maple-Balsamic Brussels Sprouts: This dish elevates the classic side with a tangy sweetness that pairs harmoniously with marshmallow-topped comfort.
- Fresh Green Salad: A light, crisp salad with mixed greens and tangy vinaigrette offers a refreshing counterbalance to the rich flavors of the casserole.
- Savory Stuffing: Incorporating herbs and spices, this comforting side dish rounds out your meal, providing the quintessential Thanksgiving experience.
- Apple Pie: To finish on a sweet note, a classic apple pie brings a deliciously fruity conclusion to your festive meal, making every gathering memorable.
- Sparkling Apple Cider: This bubbly, non-alcoholic drink adds a festive sparkle to your dinner table, perfectly complementing the sweet potato casserole’s flavors.
- Chardonnay: A chilled glass of Chardonnay enhances the dish’s richness and adds a hint of oak, making your meal feel extra special.
- Pumpkin Spice Latte: For a cozy, warm dessert drink option, this holiday favorite nicely complements the sweet potatoes’ flavors and sweetness.

Sweet Potato Casserole Recipe FAQs
How do I select ripe sweet potatoes?
When selecting sweet potatoes for this casserole, look for ones that are firm with smooth skin, avoiding any with dark spots or soft areas. The sweeter and more vibrant the color, the better the flavor—choose deep orange sweet potatoes for the best taste!
How should I store leftover sweet potato casserole?
Store your leftovers in an airtight container in the refrigerator for up to 4 days. This helps keep the casserole fresh and tasty, allowing you to enjoy those delightful flavors again. Just make sure to let it cool to room temperature before sealing it up.
Can I freeze sweet potato casserole?
Absolutely! You can freeze sweet potato casserole for up to 3 months. For best results, wrap it tightly in plastic wrap and then in aluminum foil to prevent freezer burn. When you’re ready to enjoy it again, let it thaw in the fridge overnight, then reheat in the oven at 350°F until warmed through and gooey again!
What can I do if the marshmallows burn during baking?
If you notice the marshmallows are burning, cover the casserole loosely with aluminum foil to shield them from direct heat while the filling continues to bake. This way, you can achieve that lovely golden brown on the marshmallows without charred edges.
Are there any dietary considerations I should keep in mind?
If you’re cooking for someone with dietary restrictions, you can easily make this dish suitable for vegans by substituting butter with coconut oil and using vegan marshmallows. Additionally, sweet potatoes are naturally gluten-free and rich in vitamins, making this casserole a wholesome choice.
What if my marshmallows aren’t browning in the oven?
If you find the marshmallows are not browning, don’t fret! After baking, switch your oven to broil for a few seconds, watching closely to prevent charring. You can also sprinkle a bit of extra sugar on top to encourage a nice caramelized finish!
These Sweet Potato Casserole Recipe FAQs aim to guide you through creating that perfect dish, making sure you encounter no bumps on your culinary journey!

Irresistibly Creamy Sweet Potato Casserole with Marshmallows
Ingredients
Equipment
Method
- Begin by peeling and chopping sweet potatoes into chunks. Cook them in boiling water for 15-20 minutes until tender.
- Drain and mash the sweet potatoes in a mixing bowl with butter, brown sugar, salt, cinnamon, vanilla extract, and nutmeg.
- Preheat the oven to 350°F (175°C). Grease a 9x13-inch baking dish.
- Spread the mashed sweet potato mixture evenly in the baking dish and top with mini marshmallows.
- Bake for 25-35 minutes until the marshmallows are golden brown and the filling is bubbly.
- For extra browning, broil for a few seconds if needed.
- Allow to cool slightly before serving warm.

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