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Sweet potato casserole is one of those dishes that can quickly become the reason everyone looks forward to the holiday sides.
This one starts with a creamy, buttery sweet potato filling and finishes with a generous layer of brown sugar, pecans, and butter that turns golden and crumbly in the oven.
I especially love how simple it is. Canned sweet potatoes keep the prep easy, while the homemade pecan topping gives the casserole that special holiday-table feel.
Serve it warm alongside your Thanksgiving or Christmas favorites, and don’t rush the resting time—the filling becomes wonderfully soft and set as it cools.
Why You’ll Love This Recipe
There’s a lot to love about this sweet potato casserole, but the contrast between the two layers is what really makes it shine.
Creamy sweet potatoes – Butter, milk, sugar, vanilla, and eggs turn the sweet potatoes into a smooth, rich filling.
That pecan topping! – Brown sugar, flour, melted butter, and chopped pecans bake into sweet, buttery crumbles with plenty of crunch.
Easy ingredients – Starting with canned sweet potatoes means you can get the casserole into the oven without peeling and cooking a pile of potatoes first.
Perfect for the holidays – It’s sweet and cozy enough for Thanksgiving or Christmas, but simple enough to make whenever you’re craving a classic comfort-food side.
Make it ahead – Assemble the casserole the night before, refrigerate it, and bake it the next day. One less dish to prepare when the holiday cooking begins!
Ingredients You’ll Need
For the Sweet Potato Casserole
- Sweet Potatoes – Canned sweet potatoes make this casserole especially easy. Be sure to drain them well before mashing so the filling doesn’t become watery.
- Salted Butter – Melted butter gives the sweet potato filling its rich, buttery flavor. It’s also used in the topping to help create those delicious crumbles.
- Milk – Adds moisture and creaminess to the sweet potato mixture. Whole milk will give you the richest result, though 2% can work too.
- Sugar – Granulated sugar sweetens the potatoes and gives the casserole its classic sweet flavor.
- Vanilla Extract – Just a teaspoon adds a warm vanilla note that works beautifully with the sweet potatoes and brown sugar.
- Eggs – The eggs help bind the filling together and give it structure as it bakes. They’re also important for helping the casserole set as it cools.
For the Pecan Topping
- Brown Sugar – This is where the topping gets its deep, caramel-like sweetness.
- All-Purpose Flour – Combines with the brown sugar and melted butter to create the crumbly topping.
- Chopped Pecans – Pecans add plenty of crunch and a nutty flavor that pairs so well with sweet potatoes and brown sugar.
- Salted Butter – Melted butter brings the topping together and helps it become rich and golden as the casserole bakes.
Step-by-Step Instructions
Preheat oven to 350F degrees. In a large bowl, mash 29 ounce can sweet potatoes, drained.
Then stir in ½ cup (1 stick) salted butter, melted, ⅓ cup milk, ¾ cup sugar, 1 teaspoon vanilla extract and 2 large eggs, beaten. Stir until combined well.
Pour sweet potato mixture into a 2-quart (8-inch square) baking dish.
In a bowl, combine 5 Tablespoons salted butter, melted, ⅔ cup brown sugar, ⅔ cup all-purpose flour and 1 cup chopped pecans. Use a fork or your fingers until mixture becomes small crumbles.
Sprinkle crumbles over sweet potato mixture.
Bake uncovered for 30-40 minutes until topping is golden brown. Let casserole cool for at least 15-20 minutes before serving. This is important as the casserole will set-up as it cools.
Expert Tips
Drain the sweet potatoes well. Since canned sweet potatoes are packed in liquid, give them a good drain before mashing. Extra liquid can make the finished casserole softer than you want.
Keep the topping crumbly. Use a fork or your fingertips to combine the topping ingredients. You’re looking for little buttery crumbles that can be scattered over the filling, not a smooth mixture.
Don’t skip the eggs. They’re important here! They give the sweet potato filling structure as it bakes and help it set as it cools.
Let it rest. It can be tempting to dig in as soon as that golden pecan topping comes out of the oven, but wait at least 15-20 minutes. The casserole will continue to set during that time.
Making it ahead? Assemble everything in the baking dish, cover it tightly, and refrigerate overnight. Let it come toward room temperature before baking, or plan on giving a cold casserole some extra time in the oven.
Recipe Variations
I love the pecan topping as written, but there are a few easy ways to change this casserole depending on what your family likes.
For a marshmallow sweet potato casserole, leave off the pecan topping and add mini marshmallows toward the end of baking. About the last 10 minutes is a good time to add them so they have a chance to become golden without burning.
Can’t decide between the two? Make it half pecan and half marshmallow. Add the pecan topping to one side before baking, then add marshmallows to the other side near the end.
You can also make the casserole with fresh sweet potatoes. You’ll need about 4 small sweet potatoes. Cook them until very tender and easy to mash, then continue with the recipe.
And if pecans aren’t your thing, you can leave them out or replace them with another nut you enjoy, such as almonds, cashews, or peanuts.
Storage & Reheating
This casserole keeps nicely, which is especially helpful when you have a fridge full of holiday leftovers. Cover the baking dish or transfer leftovers to an airtight container and refrigerate them for up to 3 days.
To reheat, warm individual servings until heated through. For a larger amount, return the casserole to the oven and heat it gently until the center is warm.
You can freeze it, too. Wrap the casserole well to protect it from freezer burn and freeze for up to 6 months. Let it thaw overnight in the refrigerator before reheating.
You can even freeze the casserole before baking. Thaw it overnight in the refrigerator and continue with the baking instructions, or bake it from frozen and allow additional cooking time.
Serving Suggestions
This sweet potato casserole belongs right in the middle of a big holiday spread. I love the way its sweet, buttery flavor balances all the savory dishes around it.
For Thanksgiving, serve it alongside roast turkey, stuffing, green bean casserole, mashed potatoes, cranberry sauce, and warm dinner rolls. The pecan topping brings a little crunch to a plate filled with all those soft, comforting holiday sides.
It’s just as good for Christmas dinner, especially with baked ham or roasted chicken. And don’t save it only for the holidays! Bring it to a fall potluck, Sunday dinner, or any gathering where a warm, cozy side dish is welcome.
The casserole is already fairly rich and sweet, so I like pairing it with a few fresh or savory dishes for contrast. Add roasted vegetables, green beans, Brussels sprouts, or a crisp salad, and you have a plate that feels wonderfully complete.
Recipe FAQs
1. Can I make sweet potato casserole ahead of time?
Yes, you can easily prep this casserole ahead of time. Assemble the sweet potato filling and pecan topping in the baking dish, cover tightly, and store in the refrigerator overnight. Before baking, let it sit out to come closer to room temperature. If you bake it straight from the refrigerator, it may need a little extra time in the oven.
2. Why is my sweet potato casserole runny?
This can happen if the canned sweet potatoes aren’t drained well or if the casserole doesn’t have enough time to set. Make sure to drain the sweet potatoes before mashing and don’t leave out the eggs, since they help hold the filling together. Also, let the casserole cool for at least 15-20 minutes after baking. It will thicken as it cools.
3. Can I use fresh sweet potatoes instead of canned?
Yes, you can definitely use fresh sweet potatoes. You’ll need about 4 small sweet potatoes. Cook them until they’re completely tender and easy to mash, then continue with the recipe as written. If you boil them, make sure to drain them well before making the filling.
4. Can I make sweet potato casserole without pecans?
Yes, you can simply leave the pecans out. You can also replace them with another nut you like. For a marshmallow topping, leave off the pecan topping and add mini marshmallows during the last 10 minutes or so of baking. You can even do half pecan and half marshmallow if your family likes both.
5. How do I know when sweet potato casserole is done?
Bake the casserole uncovered for 30-40 minutes. You’ll know it’s ready when the topping is golden brown and the filling is mostly set. It’s okay if the center has a slight jiggle, but it shouldn’t look loose or liquidy. Let it rest for at least 15-20 minutes before serving so the filling has time to finish setting.
Southern Sweet Potato Casserole
Ingredients
For the casserole
- 29 -ounce can sweet potatoes, drained
- 1/2 cup (1 stick) salted butter, melted
- 1/3 cup milk
- 3/4 cup Sugar
- 1 tsp vanilla extract
- 2 large eggs, beaten
For the topping
- 5 tbsp salted butter, melted
- 2/3 cup brown sugar
- 2/3 cup all-purpose flour
- 1 cup chopped pecans
Instructions
- Heat the oven to 350°F. Place the drained sweet potatoes in a large bowl and mash them.
- Add ½ cup (1 stick) melted salted butter, ⅓ cup milk, ¾ cup sugar, 1 teaspoon vanilla extract, and 2 beaten large eggs. Stir until everything is thoroughly combined.
- Transfer the sweet potato mixture to a 2-quart (8-inch square) baking dish and spread it evenly.
- In a separate bowl, combine 5 Tablespoons melted salted butter, ⅔ cup brown sugar, ⅔ cup all-purpose flour, and 1 cup chopped pecans. Work the ingredients together with a fork or your fingers until small crumbles form.
- Scatter the crumble mixture evenly over the sweet potato filling.
- Bake uncovered for 30–40 minutes, or until the topping is golden brown.
- Remove the casserole from the oven and allow it to cool for at least 15–20 minutes before serving. This resting period gives the filling time to firm up as it cools.
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Recipe Notes
