As the first hints of fall fill the air, my mind drifts to cozy dinners and the comforting warmth of family gatherings. One dish that always makes an appearance at our table is Sweet Potato Casserole. The delightful aroma of buttery, spiced sweetness wafts through the kitchen, inviting everyone to come together and share a moment. With its rich mash of sweet potatoes, a crunchy pecan topping, and the playful addition of gooey marshmallows, this casserole is not just a feast for the taste buds; it’s a nostalgic embrace that makes even the busiest weeknights feel special.
I discovered this recipe during one of those inevitable pantry raids—what could I whip up with what I had on hand? The result was a happy accident that turned into a family favorite. Not only is it incredibly easy to prepare, but it also makes for a beautiful dish that can impress any crowd. So, if you’re tired of the same old meals and looking to breathe new life into your dinner routine, let me guide you through the simple steps to create this mouthwatering Sweet Potato Casserole. Trust me; your taste buds will thank you!
Why You'll Love This Sweet Potato Casserole
- This Sweet Potato Casserole is incredibly easy to make, allowing you to spend less time in the kitchen and more time enjoying the company of loved ones.
- The flavor is a beautiful blend of sweet and buttery with a hint of warm spices that will awaken your taste buds and evoke feelings of nostalgia.
- Its versatility means it can be served as a delightful side dish for holidays or simply as a comforting weeknight meal.
- With its golden brown topping and fluffy marshmallows, this casserole also adds a stunning visual appeal to your table, making it a feast for the eyes as well as the palate.
Sweet Potato Casserole Ingredients
Uncover the secret to a delightful dish!
For the Sweet Potato Filling
- Sweet Potatoes – 3 ½ pounds of sweet potatoes are key for a creamy base full of flavor.
- Brown Sugar – ½ cup adds a rich sweetness that complements the earthiness of the potatoes.
- Unsalted Butter – ½ cup (melted) keeps the filling rich and decadent; always use unsalted to control the flavor.
- Pumpkin Pie Spice – 1 teaspoon brings warmth and depth; it’s a delightful partnership with sweet potatoes.
- Vanilla Extract – 1 teaspoon lends an aromatic sweetness that enhances the overall flavor.
- Salt – ½ teaspoon helps balance the sweetness and elevate all the flavors.
For the Topping
- Pecans, Chopped – 1 cup adds a crunchy texture and nutty flavor that contrasts beautifully with the soft filling.
- Unsalted Butter – ¼ cup (melted) ensures the topping holds together while staying crispy.
- Brown Sugar, Packed – ¼ cup sweetens the topping, creating a caramel-like finish.
- All-Purpose Flour – 3 tablespoons help bind the topping together for that perfect crumbly texture.
- Mini Marshmallows – 5 ounces provide a gooey, sweet contrast; they make this Sweet Potato Casserole utterly irresistible.

How to Make Sweet Potato Casserole
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Preheat your oven to 375°F (190°C). Start by piercing your sweet potatoes in several places with a fork to allow steam to escape. Bake them for 45-75 minutes until they’re tender and reminiscent of fall’s comforting embrace. Let them cool before peeling and mashing thoroughly.
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Mix the mashed sweet potatoes with ½ cup brown sugar, ½ cup melted unsalted butter, 1 teaspoon pumpkin pie spice, 1 teaspoon vanilla extract, and ½ teaspoon salt. Stir until the mixture is smooth and beautifully combined—the smell should be inviting!
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Combine the topping ingredients in a separate bowl: 1 cup chopped pecans, ¼ cup melted unsalted butter, ¼ cup packed brown sugar, and 3 tablespoons all-purpose flour. Mix until the texture is crumbly and reminiscent of your favorite streusel topping.
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Grease a 9×13-inch baking dish with some butter. Spread your sweet potato filling evenly across the bottom, making sure it’s nice and smooth. Then, sprinkle the prepared streusel topping generously over the filling. Bake at 375°F (190°C) for 25-35 minutes until it’s golden brown and bubbly—a sight that warms the heart.
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Top the casserole with 5 ounces of mini marshmallows after 20-25 minutes of baking if you desire that gooey touch. Return it to the oven for another 5-10 minutes, or until those marshmallows are golden brown and puffed, creating a heavenly contrast of textures.
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Cool the casserole on a wire rack for 10-15 minutes before serving. This step is crucial for allowing the filling to set, enhancing both texture and flavor.
Optional: Garnish with extra pecans for a delightful crunch!
Exact quantities are listed in the recipe card below.
How to Store and Freeze Sweet Potato Casserole
Fridge: Keep leftover Sweet Potato Casserole in an airtight container for up to 3 days. Reheat portions in the microwave or oven for a quick and comforting meal.
Freezer: For longer storage, freeze the casserole (without marshmallows) wrapped tightly in plastic wrap and aluminum foil for up to 3 months. Thaw overnight in the fridge before reheating.
Reheating: Heat the casserole in a preheated oven at 350°F (175°C) for about 20-30 minutes or until warmed through. If reheating from frozen, bake covered for about an hour, then uncover to finish heating.
Assembly Tip: If you’re freezing for later, consider preparing the casserole up to the baking step, and add the marshmallows right before serving for that perfect gooey finish.
Sweet Potato Casserole Variations
Feel free to personalize your casserole with these fun twists to enhance flavor and texture!
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Maple Syrup: Substitute ½ cup maple syrup for the brown sugar for a deeper, caramel-like sweetness.
The combination of maple with sweet potatoes brings a warm hug of flavor that everyone will adore. -
Nut-Free: Replace pecans with seeds like sunflower or pumpkin seeds for a delicious, nut-free option.
This substitution keeps the crunch while making it safe for those with nut allergies! -
Vegan: Swap butter for coconut oil and use a plant-based milk instead of marshmallows for a vegan-friendly twist.
It’s a great way to keep the essence of the dish while catering to different dietary needs. -
Spicy Kick: Add a pinch of cayenne pepper or diced jalapeños to introduce a subtle heat to the sweet filling.
This unexpected twist will surprise your guests while still keeping the comforting vibe intact! -
Creamy Twist: Mix in ½ cup of cream cheese or Greek yogurt into the sweet potato mash for extra creaminess.
This adds a luscious texture that elevates the indulgence of the casserole, making it even more irresistible. -
Tropical Flair: Incorporate ½ cup of crushed pineapple or shredded coconut into the sweet potato mix for a tropical vibe.
This twist gives your casserole a refreshing twist that takes your taste buds on a mini vacation! -
Fruit Addition: Fold in diced apples or peaches into the sweet potato filling for a fruity surprise.
These additions offer a burst of freshness that complements the sweetness perfectly. -
Herb Infusion: Stir in fresh herbs like rosemary or thyme for a touch of earthiness that enhances the flavor profile.
Herbs bring an unexpected sophistication to your sweet potato casserole that will leave everyone guessing!
Make Ahead Options
These Sweet Potato Casserole preparations are perfect for busy weeknights! You can mash the sweet potatoes and mix in the sugar, butter, spices, and salt up to 24 hours in advance. Just cover the mixture tightly and refrigerate to maintain its creamy texture. Additionally, the pecan topping can be prepared 3 days ahead—simply combine and store it in an airtight container at room temperature. When you’re ready to bake, spread the sweet potato filling into your greased dish, sprinkle on the topping, and bake according to the recipe instructions, adding the marshmallows during the last 5-10 minutes. This way, you’ll enjoy the same delicious flavor and comforting warmth with minimal effort!
What to Serve with Sweet Potato Casserole?
As the cozy scent of sweet potatoes fills your kitchen, let’s build a memorable meal around this comforting dish.
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Roasted Brussels Sprouts: The earthy flavor of Brussels sprouts perfectly complements the sweetness of the casserole while adding a delightful crunch. Toss them with olive oil, salt, and pepper before roasting for a crispy finish.
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Savory Green Beans: Fresh green beans sautéed with garlic and a touch of lemon bring a delightful brightness that balances the richness of the casserole. This addition adds a pop of color and nutrition to your plate!
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Honey Glazed Carrots: Sweet, tender carrots drizzled with honey enhance the meal’s sweetness while introducing a different texture. Their vibrant hue will make your table look beautiful and inviting.
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Quinoa Salad: A refreshing quinoa salad dotted with cucumber, cherry tomatoes, and a zesty vinaigrette offers a light and healthy contrast to the casserole’s creaminess. It’s a great way to add some wholesome grains and freshness.
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Baked Ham: A succulent baked ham adds a savory and hearty element to your meal. Its smoky flavor pairs beautifully with the sweet notes of the casserole, creating a delightful contrast on your plate.
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Cranberry Sauce: The tang of homemade cranberry sauce is a lovely counterpart to sweet potatoes. Its bold flavor cuts through the richness and brings a bright note that elevates the entire meal.
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Pumpkin Spice Lattes: Warm up your gathering with cozy pumpkin spice lattes. This seasonal drink echoes the flavors of the casserole and wraps your meal in warmth and comfort.
Let these pairings elevate your Sweet Potato Casserole experience and create moments filled with joy and deliciousness!
Chef's Helpful Tips
- For the Sweet Potato Casserole, use sweet potatoes that are firm and free of blemishes for the best texture and flavor.
- When mashing the cooked sweet potatoes, make sure to achieve a smooth consistency to enhance the creamy filling.
- Additionally, keep an eye on the topping while baking; it can burn quickly due to the sugar content, so check it a few minutes before the recommended baking time.
- If you prefer a deeper flavor, consider roasting the sweet potatoes instead of boiling them, as this will add a lovely caramelization.
- Lastly, letting the casserole cool on a wire rack allows the flavors to meld beautifully and improves the overall presentation when serving.
Sweet Potato Casserole Recipe FAQs
How do I know if my sweet potatoes are ripe?
Absolutely! When selecting sweet potatoes, look for those that are firm and smooth, avoiding any with dark spots or blemishes. A slightly uneven skin is normal, but avoid potatoes with wrinkled skin, as they may be past their prime.
How should I store leftover Sweet Potato Casserole?
Very good question! Store any leftovers in an airtight container in the refrigerator for up to 3 days. If reheating, just pop individual portions in the microwave, or warm it all up in a preheated oven to get that lovely texture back.
Can I freeze Sweet Potato Casserole?
Yes, you can! To freeze, wrap the casserole (without adding marshmallows) tightly in plastic wrap and then in aluminum foil. It can be stored in the freezer for up to 3 months. When you’re ready to enjoy it, thaw it overnight in the fridge before reheating.
What to do if my casserole is too dry?
If your Sweet Potato Casserole turns out a bit dry, not to worry! You can enhance its moisture by stirring in a little melted butter or milk to the filling before baking. Also, consider covering the casserole with foil for the first half of baking to retain moisture.
Are there any dietary considerations for Sweet Potato Casserole?
Great thought! This casserole contains dairy and nuts, so if you’re cooking for someone with allergies, consider making a nut-free version by swapping pecans with a crumbly topping made from oats or a nut-free granola. For a dairy-free option, use a non-dairy butter substitute and almond or coconut milk.
Can I make Sweet Potato Casserole ahead of time?
Absolutely! You can prepare the casserole up until the baking step and store it in the fridge for a day or so. Just remember to add the marshmallows right before baking to achieve that perfect puffed texture when it’s time to serve.

Equipment
- oven
- Baking dish
- mixing bowl
- Fork
Ingredients
For the Sweet Potato Filling
- 3.5 pounds Sweet Potatoes
- 0.5 cup Brown Sugar
- 0.5 cup Unsalted Butter melted
- 1 teaspoon Pumpkin Pie Spice
- 1 teaspoon Vanilla Extract
- 0.5 teaspoon Salt
For the Topping
- 1 cup Pecans, Chopped
- 0.25 cup Unsalted Butter melted
- 0.25 cup Brown Sugar, Packed
- 3 tablespoons All-Purpose Flour
- 5 ounces Mini Marshmallows
Instructions
How to Make Sweet Potato Casserole
- Preheat your oven to 375°F (190°C). Pierce sweet potatoes with fork and bake for 45-75 minutes until tender. Let cool, then peel and mash.
- Mix the mashed sweet potatoes with brown sugar, melted butter, pumpkin pie spice, vanilla extract, and salt until smooth.
- Combine topping ingredients in a bowl until crumbly: chopped pecans, melted butter, packed brown sugar, and all-purpose flour.
- Grease a 9x13-inch baking dish. Spread sweet potato filling evenly, then sprinkle topping over it. Bake for 25-35 minutes until golden brown.
- Top with mini marshmallows after 20-25 minutes of baking. Bake for another 5-10 minutes or until marshmallows are golden brown.
- Cool on a wire rack for 10-15 minutes before serving to allow filling to set.




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