If you’ve been hunting for the ultimate comfort food side dish for your holiday table, you’ve got to try this Sweet Potato Casserole with Pecans and Marshmallows Recipe. I absolutely love how the sweetness of the potatoes mingles with warm spices, crunchy pecans, and those heavenly golden marshmallows on top. It’s honestly one of my go-to dishes when I want to impress family and friends without a ton of fuss—and trust me, people go crazy for it every time!
Why You’ll Love This Recipe
- Perfect balance of sweet and spice: The cinnamon, nutmeg, and cloves bring warmth without overpowering the natural potato sweetness.
- Crunchy topping meets gooey marshmallows: That combo makes every bite a delightful contrast in texture.
- Simple ingredients, big flavor: Easy to find staples that come together beautifully without any complicated prep.
- Great make-ahead option: You can prep earlier and finish before serving, saving you time on the big day.
Ingredients You’ll Need
I love how straightforward the ingredients are for this Sweet Potato Casserole with Pecans and Marshmallows Recipe. Each one plays a starring role—from sweet potatoes bringing hearty substance to pecans adding that addictive crunch. Pro tip: grabbing good-quality fresh pecans will really elevate the dish!

- Sweet potatoes: I find that medium-sized ones work best — easier to slice evenly and cook through perfectly.
- Unsalted butter: This controls salt levels better, but if you only have salted, just skip the extra salt in the recipe.
- Brown sugar: I’ve used both light and dark – darker adds a richer molasses flavor if you want to mix things up.
- Water: Helps meld the sugars and spices into a luscious glaze.
- Ground cinnamon, cloves, and nutmeg: These spices bring that cozy, nostalgic warmth—don’t skip them!
- Salt: Just a pinch to balance sweetness and enhance flavor.
- Chopped pecans: Swap for walnuts if you prefer, but pecans have that buttery richness that’s unbeatable here.
- Mini marshmallows: I always add a handful extra than called for because who can resist more of those toasty gooey bites?
Variations
One thing I love about this Sweet Potato Casserole with Pecans and Marshmallows Recipe is how easy it is to customize. You can lean into different textures, adjust sweetness, or tweak the spices to make it totally your own.
- Make it vegan: I swapped butter for coconut oil once and used a dairy-free marshmallow alternative—still amazing, with a slight tropical twist.
- Add a savory edge: Some friends love a dash of smoked paprika or chipotle powder with those warm spices for a surprising smoky kick.
- Extra nutty crunch: If pecans aren’t your thing, try toasting walnuts or even sliced almonds before sprinkling them on top for a different texture and flavor.
- Spice it up: I once added a bit of ginger and cardamom for a fragrant spin, which was a total winner at our holiday dinner.
How to Make Sweet Potato Casserole with Pecans and Marshmallows Recipe
Step 1: Prep the Sweet Potatoes Like a Pro
Start by peeling your sweet potatoes and slicing them into thin, even medallions. I discovered this trick when I first struggled with uneven cooking—the thinner slices soak up the buttery sauce beautifully and cook perfectly all the way through. If you have a mandoline slicer, please use it! It saves time and guarantees uniform slices. If not, a sharp knife and some patience will do the trick.
Step 2: Make the Magical Glaze
In a small saucepan over medium heat, melt together the unsalted butter, brown sugar, water, cinnamon, cloves, nutmeg, and a pinch of salt. Stir gently as the mixture melds into a silky, fragrant glaze. This step really brings the layers of warm flavors that make this casserole so unforgettable. When it’s fully melted, remove it from the heat.
Step 3: Layer and Bake
Arrange your sweet potato slices in a baking dish in neat rows or overlapping circles. Then, using a pastry brush, coat about ¾ of your butter-spice glaze over the top evenly. Cover the dish tightly with foil to trap steam and bake in a preheated 400°F oven for about 45 to 50 minutes. This slow baking softens the potatoes while letting those flavors seep right in.
Step 4: Add Toppings and Broil
Once baked, carefully remove the foil—your kitchen is gonna smell amazing right about now! Brush the remaining glaze over the potatoes, then sprinkle the chopped pecans and mini marshmallows over the top. Pop the dish back into the oven on the broil setting for just 1 to 2 minutes. Keep a very close eye on it here—those marshmallows go from perfectly toasted to burnt in seconds, and nobody wants charred fluff.
Step 5: Cool and Serve
After broiling, let the casserole cool for 10 to 15 minutes so it can set up a little before you dig in. I like this resting step because the flavors mellow and the topping firms slightly for easier serving. Then get ready to enjoy that perfect mixture of creamy, crunchy, and sweet!
Pro Tips for Making Sweet Potato Casserole with Pecans and Marshmallows Recipe
- Uniform slicing is key: Using a mandoline or sharp knife ensures even cooking and that everything finishes at the same time without mushy or underdone spots.
- Don’t skip the resting period: It lets the casserole set so servings stay neat instead of sliding apart on the plate.
- Watch the broil closely: Toast marshmallows only until golden to keep that soft, gooey texture without burning.
- Customize glaze sweetness: Taste the melted sauce and adjust brown sugar next time if you want it a bit less or more sweet—not every batch of potatoes is the same!
How to Serve Sweet Potato Casserole with Pecans and Marshmallows Recipe

Garnishes
I usually keep garnishes simple: a few extra toasted pecans on top add a fresh crunch, and I sometimes sprinkle a light dusting of cinnamon after baking for that extra cozy aroma. If you’re feeling fancy, a small drizzle of maple syrup right before serving ties it all together beautifully.
Side Dishes
This casserole pairs perfectly with savory mains like roasted turkey, glazed ham, or baked chicken. I also love serving it alongside green beans almondine or roasted Brussels sprouts to balance those sweet, warm flavors with a fresh, crisp bite.
Creative Ways to Present
For holiday dinners, I sometimes make individual servings in small ramekins topped with a single toasted pecan and a mini marshmallow. It’s such a cute presentation and makes guests feel extra special. You can also sprinkle edible gold dust or use festive toothpicks for an elegant touch.
Make Ahead and Storage
Storing Leftovers
After serving, I cover any leftovers tightly with foil or plastic wrap and store them in the fridge for up to 3 days. The flavors actually deepen after a day, so some people prefer it reheated—plus, it’s a super easy side to heat up for lunch the next day!
Freezing
I’ve frozen this casserole successfully by baking it first, letting it cool, then wrapping tightly in foil and placing it in an airtight container. When thawed in the fridge overnight and reheated, it tastes almost as fresh as the first day—just be sure to add marshmallows fresh on top before broiling upon reheating.
Reheating
To reheat, I cover the casserole with foil and warm it at 350°F for about 20-25 minutes until heated through. If you want that toasty marshmallow top, add fresh marshmallows and broil for 1-2 minutes right before serving.
FAQs
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Can I make Sweet Potato Casserole with Pecans and Marshmallows Recipe ahead of time?
Absolutely! You can prepare the casserole through step 3 (before adding pecans and marshmallows), cover it tightly, and refrigerate for up to 24 hours. When you’re ready, add your toppings and broil just before serving.
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What if I don’t like marshmallows?
No problem! You can skip marshmallows entirely or substitute with a crunchy pecan streusel topping for a nutty, sugary finish that’s just as satisfying.
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Can I use frozen sweet potatoes?
While fresh sweet potatoes work best for this recipe’s texture, you can use frozen slices if you thaw and drain them well first. Expect the casserole’s texture to be a bit softer but still delicious.
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How do I keep marshmallows from burning?
Broil for just 1-2 minutes and stay close by! Turning on the broiler lasts seconds to toast those marshmallows golden—once you see color, pull it out immediately.
Final Thoughts
Honestly, this Sweet Potato Casserole with Pecans and Marshmallows Recipe holds a special place in my heart—and on my holiday table. It’s that perfect blend of cozy flavors and textures that feels like a warm hug in a dish. Give it a shot, whether it’s Thanksgiving, Christmas, or just a chilly weeknight, and I promise you’ll keep coming back for more. Enjoy every bite—you deserve it!
Print
Sweet Potato Casserole with Pecans and Marshmallows Recipe
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Total Time: 1 hour 10 minutes
- Yield: 5 servings
- Category: Side Dish
- Method: Baking
- Cuisine: American
Description
A classic Thanksgiving side dish featuring thinly sliced sweet potatoes baked in a buttery, spiced brown sugar sauce, topped with crunchy pecans and toasted mini marshmallows for a sweet and savory delight.
Ingredients
Sweet Potatoes
- 5-6 medium sweet potatoes, peeled and cut into thin medallions
Sauce
- ¼ cup unsalted butter
- ¼ cup brown sugar (light or dark)
- ½ cup water
- 1 teaspoon ground cinnamon
- 1 teaspoon ground cloves
- 1 teaspoon ground nutmeg
- ¼ teaspoon salt
Toppings
- ¼ cup chopped pecans (or walnuts)
- ½ cup mini marshmallows
Instructions
- Preheat Oven: Preheat your oven to 400°F to prepare for baking the sweet potatoes.
- Prepare Potatoes: Peel the sweet potatoes and slice them into thin medallions using a mandoline slicer or knife. Arrange the slices evenly in a baking dish.
- Make Sauce: In a small or medium saucepan over medium heat, melt together unsalted butter, brown sugar, water, ground cinnamon, ground cloves, ground nutmeg, and salt, stirring until fully combined and smooth.
- Coat Potatoes: Using a pastry brush, evenly spread about three-quarters of the prepared sauce over the sweet potato slices in the baking dish.
- Bake Covered: Cover the baking dish with foil and bake in the preheated oven for 45 to 50 minutes, until the potatoes are tender.
- Add Toppings: Remove the foil and spread the remaining sauce over the potatoes. Sprinkle chopped pecans and mini marshmallows evenly on top.
- Broil: Return the baking dish to the oven and switch to the broil setting. Broil for 1 to 2 minutes, watching carefully until the marshmallows toast and turn golden brown.
- Cool and Serve: Remove from oven and let cool for 10 to 15 minutes before serving to allow the dish to set.
Notes
- For ease and uniform slices, use a mandoline slicer to cut sweet potatoes thinly.
- If using salted butter instead of unsalted, omit the additional ¼ teaspoon salt in the sauce to avoid oversalting.
- Add extra mini marshmallows if you prefer a sweeter topping.
Nutrition
- Serving Size: 1 serving (approx. 1 cup)
- Calories: 280 kcal
- Sugar: 20 g
- Sodium: 100 mg
- Fat: 12 g
- Saturated Fat: 7 g
- Unsaturated Fat: 4 g
- Trans Fat: 0 g
- Carbohydrates: 38 g
- Fiber: 4 g
- Protein: 2 g
- Cholesterol: 25 mg


