“Did you catch that delightful aroma wafting from my kitchen?” I’ll never forget how my family’s eyes lit up when I unveiled my Marshmallow Sweet Potato Casserole. This versatile dish beautifully straddles the line between a comforting side and a dessert, making it a hit for both kids and adults alike. With a rich, creamy base and an irresistible crunchy topping, it’s a fantastic way to elevate any meal, from Thanksgiving feasts to cozy weeknight dinners. Plus, it’s a breeze to prepare ahead of time, letting you enjoy more moments with your loved ones around the table. Curious how this sweet potato delight comes together? Let’s dive into the recipe!

Why is this dish a must-try?
Comforting and delectable, this Marshmallow Sweet Potato Casserole will enchant your taste buds with its perfect blend of flavors. Versatile enough to serve as a side or a dessert, it suits any occasion, from festive gatherings to simple family dinners. Time-saving prep means you can make it ahead, leaving you free to enjoy quality time. As a crowd-pleaser, both kids and adults will be begging for seconds! And if you’re a fan of delightful pairings, try serving it alongside my Mashed Potato Cheese or Sweet Candied Carrots for a feast to remember.
Marshmallow Sweet Potato Casserole Ingredients
Get ready for a delightful dish!
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For the Base
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Canned Yams – Creates a sweet, creamy foundation for the casserole; fresh orange-fleshed varieties work great too!
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Butter – Adds rich flavor and helps bind everything together; make sure it’s melted for easy mixing.
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Granulated Sugar – Sweetens the base; brown sugar is a fantastic substitute for a deeper flavor.
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Milk – Contributes creaminess; swap for dairy-free alternatives if needed.
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Eggs – Essential for structure; vegan options can be used if you prefer egg substitutes.
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Vanilla Extract – Boosts sweetness and enhances the overall flavor profile.
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For the Topping
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Pecan Pieces – Provide a delightful crunch and nutty flavor; walnuts make a scrumptious alternative.
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Brown Sugar – Caramelizes during baking, adding depth and sweetness.
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All-Purpose Flour – Helps form the structure of the topping; gluten-free flour can be used if necessary.
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Mini Marshmallows (optional) – Bring a gooey sweetness and beautiful presentation; feel free to mix in some crushed graham crackers for extra texture!
This Marshmallow Sweet Potato Casserole is sure to make your gatherings special, whether it’s a cozy dinner or a festive celebration!
Step‑by‑Step Instructions for Marshmallow Sweet Potato Casserole
Step 1: Preheat and Prepare
Preheat your oven to 350°F (175°C) and grease an 8×8 inch baking dish with butter or cooking spray. This step is essential to ensure your Marshmallow Sweet Potato Casserole comes out easily after baking. Gather all your ingredients so you can mix them seamlessly as you go along.
Step 2: Boil the Yams
In a saucepan, place your canned yams, including their liquid, and bring them to a gentle boil over medium heat. Allow them to cook until they are fork-tender, about 10-15 minutes. Once they are soft, drain the yams and mash them until smooth, creating a creamy base for the casserole.
Step 3: Mix the Filling
In a large mixing bowl, combine the mashed yams with melted butter, granulated sugar, milk, eggs, and vanilla extract. Stir the mixture until it is well blended and smooth, ensuring all ingredients are fully incorporated for the perfect filling. This rich, vibrant mixture is the heart of your Marshmallow Sweet Potato Casserole.
Step 4: Spread the Mixture
Carefully spread the sweet potato mixture into your prepared baking dish. Use a spatula to smooth the top evenly, ensuring it lays flat in the dish. This step ensures even cooking and a delightful texture when you serve your casserole.
Step 5: Prepare the Topping
In a separate bowl, mix together the pecan pieces, brown sugar, all-purpose flour, and melted butter until it becomes crumbly. This crunchy topping adds a wonderful contrast to the creamy filling of the Marshmallow Sweet Potato Casserole, providing texture and flavor.
Step 6: Assemble the Casserole
Sprinkle the pecan topping evenly over the sweet potato mixture in the baking dish. Make sure the topping is spread out evenly so every bite will be bursting with flavor. The crumbly mix will turn golden brown, adding a delicious crunch when baked.
Step 7: Bake the Casserole
Place the baking dish in the preheated oven and bake for about 45 minutes or until the topping is golden brown and the filling is set. You want to see a bubbling edge and a slight firmness in the center of the casserole; this indicates it’s ready for the next step.
Step 8: Add the Marshmallows
In the last 5 minutes of baking, sprinkle mini marshmallows on top of the casserole. They will melt and get toasty, creating a beautiful, gooey layer. Keep a close eye during this time to avoid burning, ensuring your Marshmallow Sweet Potato Casserole has that perfect finishing touch.
Step 9: Cool Before Serving
Once baked, remove your casserole from the oven and allow it to cool for at least 15 minutes before serving. This cooling period helps the filling set, making it easier to serve with a lovely slice. The contrast of textures and flavors will make this dish a standout at any table!

Make Ahead Options
These Marshmallow Sweet Potato Casserole components are perfect for meal prep! You can prepare the sweet potato mixture and topping up to 24 hours in advance. Simply mix the mashed yams with the other filling ingredients and store them in an airtight container in the refrigerator. For the topping, combine the pecans, brown sugar, flour, and melted butter in a separate container, keeping it ready for the final assembly. When it’s time to bake, just spread the filling into your greased baking dish, layer on the topping, and bake as directed. Adding the mini marshmallows during the last 5 minutes will ensure they stay perfectly toasted and gooey! This makes weeknight dinners a breeze and lets you enjoy heartfelt family moments without the fuss!
How to Store and Freeze Marshmallow Sweet Potato Casserole
- Fridge: Store leftovers in an airtight container in the fridge for up to 4 days. Allow the casserole to cool completely before sealing to maintain freshness.
- Freezer: For longer storage, freeze the casserole for up to 3 months. Cover tightly with plastic wrap and then aluminum foil to prevent freezer burn.
- Reheating: When ready to enjoy, thaw overnight in the refrigerator. Reheat covered in the oven at 350°F (175°C) for 20-25 minutes, adding marshmallows in the last few minutes for that gooey finish.
What to Serve with Marshmallow Sweet Potato Casserole?
Elevate your mealtime experience with delicious pairings that complement the sweetness and texture of your casserole.
- Savory Ham: The smoky, salty flavor of ham beautifully balances the sweetness of the casserole, creating harmony on your plate.
- Roasted Chicken: Tender, juicy chicken served alongside adds a satisfying protein, enhancing the dish’s comforting qualities.
- Crispy Brussels Sprouts: The nutty crunch from roasted Brussels sprouts contrasts delightfully with the creamy casserole, providing a fun texture variation.
- Green Bean Almondine: Fresh green beans sautéed with almond slices add brightness and a crunchy element, rounding out your meal with color and flavor.
- Cranberry Sauce: A tart cranberry sauce cuts through the richness, offering a refreshing burst of flavor that pairs well with sweet potatoes.
- Garlic Bread: Warm, toasty garlic bread is perfect for soaking up every morsel of the marshmallow sweet potato casserole and adds hearty satisfaction.
- Sweet Tea or Apple Cider: Pour a glass of sweet tea or warm apple cider, both of which provide a lovely contrast to the dish’s sweetness.
- Pumpkin Pie: Seal the meal with a dessert classic, enhancing that fall-inspired theme and satisfying anyone’s sweet tooth.
Marshmallow Sweet Potato Casserole Variations
Ready to add your personal touch to this delightful dish? Let’s explore some fun twists that will make your casserole even more special!
- Nut-Free: Use pumpkin seeds or sunflower seeds instead of nuts to add crunch without allergens.
- Dairy-Free: Swap butter and regular milk for coconut oil and almond milk for a lactose-free treat. The coconut adds a subtle sweetness that pairs beautifully with sweet potatoes!
- Spicy Kick: Mix in a dash of cayenne pepper or chili powder for a warm, surprising kick. It adds depth and pairs wonderfully with the sweetness of the casserole.
- Cinnamon Spice: Incorporate ground cinnamon or nutmeg directly into the sweet potato mixture for a hint of warm spice. It enhances the cozy, comforting vibe of this dish beautifully.
- Maple Richness: Replace granulated sugar with pure maple syrup for a distinct flavor profile. Not only do you get a deeper taste, but it also makes the casserole a bit richer!
- Textural Bonus: Consider adding crushed graham crackers or oats to the pecan topping for an extra crunch. This makes for a delightful contrast to the creamy base.
- Fruity Infusion: Toss in some diced apples or pears into the filling for a fruity twist that adds sweetness and a new flavor dimension. They bake down beautifully, providing a lovely texture!
With all these variations, there’s no limit to what you can create. Whether you decide to bring a new flavor aspect or master the texture, this classic casserole is your canvas. For a perfect holiday feast, consider pairing it with my Maple Roasted Sweet Potatoes or serving it alongside some Sweet Candied Carrots for a colorful and delicious spread!
Expert Tips for Marshmallow Sweet Potato Casserole
- Drain Thoroughly: Ensure that the liquid from canned yams is completely drained to avoid a watery casserole. This helps achieve a perfectly creamy texture.
- Don’t Rush the Baking: Bake until the topping is golden brown; this enhances flavor and crunch. Check the center for firmness to know it’s set.
- Timing for Marshmallows: Add mini marshmallows during the final 5 minutes of baking to prevent burning. This keeps them gooey and perfectly toasted.
- Let it Cool: Allow the casserole to cool for at least 15 minutes before serving; this helps it set nicely for easier slicing and serving.
- Flavor Variations: Feel free to experiment with spices like cinnamon or nutmeg to warm up the flavors in your Marshmallow Sweet Potato Casserole.

Marshmallow Sweet Potato Casserole Recipe FAQs
What kind of sweet potatoes should I use?
You can use canned yams for convenience, but if you prefer fresh, choose orange-fleshed sweet potatoes for the best flavor and texture. Look for firm potatoes without dark spots or blemishes.
How do I store leftover Marshmallow Sweet Potato Casserole?
Store leftover casserole in an airtight container in the fridge for up to 4 days. Make sure it’s fully cooled before sealing to keep it fresh. This way, you can enjoy it as scrumptious leftovers!
Can I freeze the casserole?
Absolutely! You can freeze your Marshmallow Sweet Potato Casserole for up to 3 months. Cover it tightly with plastic wrap and then aluminum foil to avoid freezer burn. When you’re ready to serve, thaw it overnight in the fridge before reheating.
What should I do if the casserole is too watery?
If your casserole turns out watery, it might be due to excess liquid from the canned yams. For next time, ensure that the yams are well-drained before mashing. If you already have a watery casserole, you can bake it a bit longer to help it set; just keep an eye to prevent burning.
Are there any dietary considerations for this recipe?
Yes! To make the casserole dairy-free, you can substitute regular milk with almond or oat milk and use dairy-free butter. If you’re vegan, replace eggs with flax eggs (1 tablespoon flaxseed meal mixed with 2.5 tablespoons of water equals one egg) to maintain the structure.
Can I add nuts for extra flavor?
The more the merrier! Feel free to add nuts like walnuts or almonds instead of pecans, or even incorporate spices like cinnamon or nutmeg into the sweet potato mixture for an extra burst of flavor.

Marshmallow Sweet Potato Casserole: Comfort Food Magic
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and grease an 8x8 inch baking dish with butter or cooking spray.
- In a saucepan, bring the canned yams, including their liquid, to a gentle boil over medium heat.
- Cook until fork-tender, about 10-15 minutes, then drain and mash until smooth.
- In a large mixing bowl, combine the mashed yams with melted butter, granulated sugar, milk, eggs, and vanilla extract.
- Spread the sweet potato mixture into your prepared baking dish.
- In a separate bowl, mix together the pecan pieces, brown sugar, all-purpose flour, and melted butter until crumbly.
- Sprinkle the pecan topping evenly over the sweet potato mixture.
- Bake for about 45 minutes or until the topping is golden brown and filling is set.
- In the last 5 minutes of baking, sprinkle mini marshmallows on top.
- Allow to cool for at least 15 minutes before serving.

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