My friend brought this sweet potato casserole to our Thanksgiving potluck three years ago, and I'm not kidding when I say people went crazy for it. There were actual fights about who got the last scoop, and someone tried sneaking the leftovers out when she wasn't watching. I trapped her in the kitchen and wouldn't leave until she agreed to give me the recipe. She laughed and said her grandmother taught her to make it back in the 1950s, and it had been at every family holiday since then.
Why You'll Love This Sweet Potato Casserole
Back making this probably thirty times over the past three years, here's why it keeps showing up at our table. The whole thing is way easier than it looks - most of the work is just boiling and mashing Sweet Potato Casserole, which takes maybe 20 minutes. The prep time is shorter than driving to the store for the premade version that never tastes right anyway.
Here's the best part though - you can make this a full day ahead, which saves your life when you're trying to cook ten other things for Thanksgiving. Just prep it, cover it, stick it in the fridge, and bake it right before dinner. Johnny loves the marshmallow version (no surprise there, since he's seven and anything with marshmallows wins), but adults always go for the pecan topping. I usually make one pan of each now because people have really strong feelings about this.
Jump to:
- Why You'll Love This Sweet Potato Casserole
- Ingredients for Sweet Potato Casserole
- How To Make Sweet Potato Casserole Step By Step
- Smart Swaps for Your Sweet Potato Casserole
- Favorite Ways to Switch It Up
- Equipment for Sweet Potato Casserole
- Storing Your Sweet Potato Casserole
- Top Tip
- FAq
- Time to Make Your New Holiday Favorite!
- Related
- Pairing
- Sweet Potato Casserole
Ingredients for Sweet Potato Casserole
For the Sweet Potato Base:
- 3 pounds sweet potatoes
- ½ cup butter
- ½ cup milk
- ⅓ cup brown sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ½ teaspoon cinnamon
- ¼ teaspoon nutmeg
- ½ teaspoon salt
For the Marshmallow Topping:
- 3 cups mini marshmallows
- Extra butter for dotting on top
For the Pecan Streusel Topping:
- 1 cup chopped pecans
- ½ cup brown sugar
- ⅓ cup flour
- ¼ cup melted butter
- Pinch of salt
How To Make Sweet Potato Casserole Step By Step
Prepare the Sweet Potatoes
- Fill large pot with water and bring to rolling boil over high heat
- Add whole sweet potatoes (scrubbed clean but unpeeled) to boiling water
- Boil for 30-40 minutes until fork slides through easily with no resistance
- Drain in colander and let cool just enough to handle safely
- Peel off skins with your hands
Create Creamy Sweet Potato Base
- Place peeled sweet potatoes in large mixing bowl and mash until smooth
- Add melted butter, milk, and brown sugar, stirring until well combined
- Beat in eggs one at a time, then add vanilla extract
- Mix in cinnamon, nutmeg, and salt until everything is creamy and uniform
- Taste and adjust sweetness or spices if needed
Prepare Baking Dish and Oven
- Preheat oven to 350°F while you work on toppings
- Butter a 9x13 inch baking dish generously to prevent sticking
- Pour sweet potato mixture into prepared dish and spread evenly with spatula
- Smooth the top so it bakes uniformly
Add Your Chosen Topping
- Bake casserole uncovered for 20 minutes first
- Remove from oven and quickly cover entire surface with mini marshmallows
- Return to oven for 10 more minutes until marshmallows are golden and puffy
- Mix chopped pecans, brown sugar, flour, melted butter, and pinch of salt in bowl
- Sprinkle mixture evenly over unbaked sweet potato base
- Bake for 25-30 minutes until topping is golden and base is set
Finish and Serve
- Remove from oven and let rest 5 minutes before serving
- Serve warm directly from baking dish
- Store leftovers covered in refrigerator
- Reheat portions in oven or microwave as needed
Smart Swaps for Your Sweet Potato Casserole
Sweet Potato Options:
- Fresh sweet potatoes → Canned (drain really well, use 2 large cans)
- Orange sweet potatoes → White sweet potatoes (less sweet)
- Regular sweet potatoes → Yams (sweeter and moister)
Dairy Swaps:
- Whole milk → Half-and-half (richer)
- Regular milk → Almond milk (thinner texture)
- Butter → Coconut oil (different flavor but works)
- Full dairy → Oat milk + vegan butter
Sugar Alternatives:
- Brown sugar → Maple syrup (reduce milk by 2 tablespoons)
- Regular sugar → Coconut sugar
- Full sugar → Half the amount (still tastes good)
Topping Changes:
- Mini marshmallows → Large marshmallows cut up
- Pecans → Walnuts or almonds
- Streusel → Crushed cornflakes with butter
- Sweet → Savory (skip sugar, add sage and thyme)
Favorite Ways to Switch It Up
Bourbon Pecan:
- Add 2 tablespoons bourbon to sweet potato base
- Extra brown sugar in pecan topping
- Vanilla ice cream on the side
- Adults go crazy for this version
Orange Spice:
- Add orange zest to the base
- Splash of orange juice instead of some milk
- Candied pecans on top
- Tastes like fall in a pan
Maple Walnut:
- Swap brown sugar for pure maple syrup
- Use walnuts instead of pecans
- Add extra cinnamon
- Less sweet, more nutty
S'mores Style:
- Graham cracker crumbs mixed in topping
- Marshmallows on top
- Drizzle with melted chocolate after baking
- Johnny requests this version constantly
Savory Herb:
- Skip all the sugar
- Add fresh thyme and sage
- Top with buttered breadcrumbs and Parmesan
- Perfect for people who don't like sweet casseroles
Equipment for Sweet Potato Casserole
- Large pot (for boiling sweet potatoes)
- 9x13 baking dish (glass or ceramic)
- Potato masher or hand mixer
- Large mixing bowl
- Measuring cups and spoons
- Sharp knife
Storing Your Sweet Potato Casserole
Make-Ahead (Best Option):
- Prepare everything up to baking
- Cover tightly with plastic wrap then foil
- Store in fridge up to 2 days
- Add topping right before baking
- Bake straight from fridge (add 10 extra minutes)
Fridge Storage (3-4 days):
- Let cool completely after baking
- Cover with foil or plastic wrap
- Store in the baking dish or transfer to container
- Reheat at 325°F for 20 minutes
Freezer Storage (1-2 months):
- Cool completely
- Wrap really well with plastic then foil
- Label with date
- Thaw in fridge overnight before reheating
- Don't freeze with marshmallow topping (gets weird)
Reheating Tips:
- Oven works way better than microwave
- Cover with foil so it doesn't dry out
- Add fresh marshmallows if reheating that version
- Pecan topping reheats perfectly as-is
Top Tip
- This happened last Thanksgiving and completely changed how we do the marshmallow topping. I was making the casserole and had Johnny "helping" by arranging the mini marshmallows on top. He got bored with the neat rows I was showing him and just started dumping them on randomly, piling some areas really high and leaving other spots almost bare.
- I was about to fix it because it looked messy, but my husband said to just let it go and see what happens. Turns out, those super tall piles of marshmallows got dark and caramelized on top while staying gooey underneath, and the thinner areas got evenly toasted. Everyone fought over the tall marshmallow spots because they had this almost burnt-sugar thing going on that was incredible.
- Now we do it on purpose - pile the marshmallows high in some spots and thin in others. Gives people options depending on whether they like their marshmallows lightly toasted or almost burnt. My aunt actually gets mad if I make it "the boring flat way" now. Sometimes the best cooking tricks come from a seven-year-old getting impatient with his mom's instructions. Johnny reminds me of this every single time we make this sweet potato casserole, and honestly, he's earned the bragging rights.
FAq
What goes in sweet potato casserole?
The base has mashed sweet potatoes, butter, milk, brown sugar, eggs, vanilla, and warm spices like cinnamon and nutmeg. The topping is either mini marshmallows or a pecan streusel made with pecans, brown sugar, flour, and butter. Some people do both toppings at once, but that's too much sweetness for most people.
What is in Ruth's Chris sweet potato casserole?
Their version uses sweet potatoes, brown sugar, butter, cinnamon, and tops it with pecans, brown sugar, and more butter. It's basically the pecan streusel version of this sweet potato casserole. They don't use marshmallows at the restaurant, but you can make a similar version at home using our pecan topping recipe.
Should I bake or boil sweet potatoes for casserole?
Boiling works better for casseroles. Baked sweet potatoes lose moisture in the oven, making them drier and harder to mash smooth. Boiled sweet potatoes stay moist and mash easily into that creamy texture you want. Plus boiling is faster - about 30 minutes versus an hour for baking.
What is the most delicious way to cook sweet potatoes?
For casserole specifically, boiling them whole with skins on, then peeling after cooking gives the best texture and flavor. The skins slip right off when they're hot, and boiling keeps them moist. For this sweet potato casserole recipe, don't peel first - it's extra work and the Sweet Potato Casseroleabsorb too much water.
Time to Make Your New Holiday Favorite!
You've got everything you need now - from the basic recipe to Johnny's marshmallow piling method that somehow works better than doing it the "right" way. This sweet potato casserole proves that holiday sides don't have to be stressful or complicated to be everyone's favorite dish.
Want more crowd-pleasers? Try our Easy Peanut Butter Cup Cookies Recipe for a dessert that disappears in minutes. Need a weeknight dinner winner? Our Healthy Honey Garlic Chicken Recipe gets on the table fast without sacrificing flavor. Or make our Delicious Pork Chops Recipe that finally solves the dry pork chop problem once and for all!
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Pairing
These are my favorite dishes to serve with Sweet Potato Casserole
Sweet Potato Casserole
Ingredients
Equipment
Method
- Cook sweet potatoes whole until fork tender, then peel easily once slightly cool.
- Mash peeled potatoes with butter, milk, eggs, and spices to create smooth base.
- Spread sweet potato mixture into buttered baking dish and smooth the top.
- Top with marshmallows or pecan streusel, depending on your preferred version.
- Bake until topping is golden and base is set, then let rest before serving.
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