Introduction
Potato casserole with marshmallows is a dish that perfectly balances savory and sweet, making it an ideal addition to family gatherings or holiday celebrations. This comforting casserole combines creamy potatoes with fluffy marshmallows, resulting in a dish that's both nostalgic and indulgent.
The creamy texture of the potatoes, paired with the caramelized marshmallows on top, creates a harmonious contrast that has delighted taste buds for generations. Whether it’s a festive dinner or a casual potluck, this casserole is sure to be a crowd-pleaser, transforming humble ingredients into a memorable side dish.
Ingredients
- 4 large russet potatoes, peeled and cubed
Russet potatoes are ideal for casseroles due to their starchy composition, which yields a fluffy, creamy texture when cooked. Their mild flavor allows the other ingredients to shine through. - 1 cup heavy cream
Heavy cream adds richness and velvety texture to the casserole, helping to bind the potatoes while enhancing the overall flavor. The cream contributes to a luxurious mouthfeel that distinguishes this dish. - 1/2 cup butter, melted
Melted butter imparts a deep, savory flavor and aids in achieving a golden crust on the marshmallows and also enriches the texture of the potatoes. - 1/2 cup brown sugar
Brown sugar contributes sweetness and moisture, providing a subtle caramel flavor that complements the savory elements of the dish. It also helps in achieving that delightful glaze on top. - 1 teaspoon vanilla extract
Vanilla extract enhances the sweetness and adds depth to the flavor profile. It's an unexpected twist that elevates the dish beyond typical potato casseroles. - 2 cups mini marshmallows
Mini marshmallows create a beautiful, toasted topping that caramelizes beautifully in the oven. Their sweetness contrasts with the savory potatoes, making the dish a sweet and salty delight.
Directions & Preparation
Step 1: Preheat the oven to 350°F (175°C).
Preheating the oven ensures that the casserole cooks evenly and helps achieve the desired golden-brown finish on the marshmallows. A properly heated oven promotes better baking and browning.
Step 2: Prepare the potatoes by peeling and cubing them, then place them in a large pot of salted boiling water.
Cooking the potatoes in salted water infuses them with flavor and helps soften them faster. Boiling until fork-tender ensures that the potatoes mash easily and merge smoothly with the other ingredients.
Step 3: Drain the potatoes and return them to the pot. Add heavy cream, melted butter, brown sugar, and vanilla extract.
This step combines all the key elements that create the casserole's creamy texture and distinctive flavor. Mixing in the hot potatoes allows flavors to meld better, enhancing the overall dish.
Step 4: Use a potato masher or mixer to mash the mixture until smooth and well combined.
Mashing the potatoes until smooth helps to integrate all the flavors and ensures a creamy consistency. This is an important step to keep the casserole light and fluffy, preventing any unappetizing lumps.
Step 5: Spread the potato mixture evenly in a greased baking dish.
Even spreading of the potato mixture ensures uniform cooking of the casserole. A greased dish helps in easy serving and prevents sticking, making cleanup effortless.
Step 6: Top the casserole with mini marshmallows, spreading them evenly.
Evenly distributing the marshmallows allows for consistent caramelization, resulting in a perfect toasted topping. Spreading them to the edges creates an inviting appearance that maximizes texture.
Step 7: Bake in the preheated oven for 30-35 minutes, until the marshmallows are golden brown.
Baking time is crucial for achieving that perfect golden crust on the marshmallows. Keeping an eye on them toward the end ensures they don't burn, preserving their sweet and fluffy nature.
Step 8: Remove from the oven and let it cool slightly before serving.
Allowing the casserole to rest before serving enables flavors to settle and improves the overall texture. This brief resting period makes it easier to scoop and enhances presentation.

The Sweet and Savory Harmony
The combination of savory potatoes and sweet marshmallows creates an irresistible flavor balance. Each forkful delivers a delightful mix of creamy and sweet, making this dish more than just a side—it's a star on the table. The layering of flavors invites everyone to savor the bite, relishing in the contrast that's both comforting and surprising.
Textures That Delight
The appeal of this casserole lies in its contrasting textures. The velvety mashed potatoes serve as a soft base, while the mini marshmallows provide a fluffy, slightly chewy topping. As you dig in, the marshmallows create a satisfying resistance before melting away in your mouth, leaving behind the creamy richness of the potatoes—a feast for the senses.
A Tradition Reimagined
Potato casserole with marshmallows has deep roots in comfort food traditions, often making appearances at festive gatherings. By elevating this classic with rich flavors and textures, it invites home cooks to preserve tradition while putting their unique spin on it. This recipe not only honors the past but also inspires new memories around the dinner table.
FAQs
Why is my casserole too thick?
If your casserole is too thick, consider adding a splash of additional cream or milk to loosen the mixture. This will help achieve a creamier consistency.
What can I do if the marshmallows are not browning?
If the marshmallows aren't browning as desired, you can place the casserole under the broiler for a couple of minutes. Just watch carefully to prevent burning.
Can I use sweet potatoes instead of russets?
Yes, sweet potatoes can be used for a different flavor profile and added nutritional benefits. Adjust the sugar to your taste since sweet potatoes are naturally sweeter.
Why does my casserole taste bland?
A bland taste could be due to insufficient seasoning during the mixing process. Ensure to taste and adjust flavors, particularly with salt and sugar, for better balance.
Is there a way to make this recipe lighter?
To lighten the recipe, consider using low-fat milk instead of heavy cream and reducing the amount of butter. Opting for fewer marshmallows can also help reduce sweetness.
What should I do if the bottom is overcooked?
If you notice the bottom of your casserole is overcooked, ensure you're using a low rack in the oven to prevent direct heat contact. Covering it with foil until the end of baking can help mitigate burning.
Conclusion
Potato casserole with marshmallows transforms simple ingredients into a dish that embodies comfort and joy. The combination of creamy potatoes and sweet, toasted marshmallows appeals to all ages, ensuring it makes a memorable appearance at your table.
Whether enjoyed as a holiday special, a potluck favorite, or a weeknight treat, this casserole is a delightful way to bring family and friends together. Embrace this charming dish, and watch it become a beloved staple in your cooking repertoire.
Recipe Card

Delightful Potato Casserole with Marshmallows
Ingredients
Method
- Preheat the oven to 350°F (175°C).
- Prepare the potatoes by peeling and cubing them, then place them in a large pot of salted boiling water.
- Drain the potatoes and return them to the pot. Add heavy cream, melted butter, brown sugar, and vanilla extract.
- Use a potato masher or mixer to mash the mixture until smooth and well combined.
- Spread the potato mixture evenly in a greased baking dish.
- Top the casserole with mini marshmallows, spreading them evenly.
- Bake in the preheated oven for 30-35 minutes, until the marshmallows are golden brown.
- Remove from the oven and let it cool slightly before serving.
Notes
Additional serving suggestions: pair with a crisp salad, garlic bread, or roasted seasonal vegetables for balance.
For make-ahead, prep components separately and assemble just before heating to preserve texture.
Taste and adjust with acid (lemon/vinegar) and salt right at the end to wake up flavors.