Name: Sweet Potato Casserole
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: American
Ingredients: Sweet potatoes, peeled and cubed; 1 1/4 cups light brown sugar, divided; Unsalted butter, cubed or softened for the filling and melted and cooled for the topping; Whole milk; Eggs; Salt; Vanilla extract; All-purpose flour; Ground cinnamon; Pecan halves, chopped

This Sweet Potato Casserole is one of my favorite ways to turn simple sweet potatoes into a rich and comforting side dish. I make a smooth, creamy sweet potato filling flavored with brown sugar, butter, and vanilla, then cover it with a buttery cinnamon-pecan crumble. As it bakes, the filling becomes warm and fluffy while the topping turns golden, crisp, and caramelized.

I especially like serving this casserole for Thanksgiving, Christmas, and other holiday dinners, but I don’t save it only for special occasions. It also makes a satisfying side dish whenever I want something cozy with a combination of sweet, buttery, and nutty flavors.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Sweet potatoes: I peel and cube them so they cook evenly and become tender enough to mash into a smooth filling.

Light brown sugar: I use a smaller amount in the sweet potato filling and a larger amount in the topping for a rich caramel-like sweetness.

Unsalted butter: I use softened or cubed butter in the filling and melted butter to bring the crumbly pecan topping together.

Whole milk: I add milk to loosen the mashed sweet potatoes and give the filling a creamier consistency.

Eggs: I use eggs to help bind the filling and give the baked casserole a slightly fluffy texture.

Salt: I find that salt balances the sweetness and makes the sweet potato and brown sugar flavors more pronounced.

Vanilla extract: I add vanilla for a warm aromatic note that complements the sweet potatoes.

All-purpose flour: I mix flour into the topping to help create its crumbly texture.

Ground cinnamon: I use cinnamon to add warmth and a classic fall flavor.

Pecans: I chop pecan halves and fold them into the topping for a buttery crunch.

Directions

I preheat my oven to 375°F (190°C) and lightly grease a 9×13-inch casserole dish with butter or nonstick cooking spray.

I place the peeled and cubed sweet potatoes in a large pot and add enough water to cover them by about 1 inch. Then I bring the water to a boil over high heat, reduce it to medium, and cook the potatoes for 15–20 minutes, until they are very tender.

Next I drain the sweet potatoes thoroughly and return them to the pot. Then I mash them until smooth, then add ¼ cup brown sugar, the cubed butter, whole milk, eggs, salt, and vanilla. I beat everything with a hand mixer, or stir vigorously with a wooden spoon, until the mixture is smooth and creamy.

I spread the sweet potato mixture evenly in my prepared casserole dish and let it cool slightly while I make the topping.

In a medium bowl, I combine 1 cup brown sugar with the flour and cinnamon. I stir in the melted and cooled butter with a fork until the mixture develops a crumbly consistency. Then I fold in the chopped pecans.

I sprinkle the brown sugar pecan mixture evenly over the sweet potato filling, making sure I distribute the pecans across the entire casserole.

Then I bake the casserole for 25–30 minutes. I know it is ready when the filling looks slightly puffed and the pecan topping is golden brown.

Next I let the casserole rest for about 10 minutes before serving. I find that this short resting time helps the filling settle and makes the casserole easier to serve.

Servings and Timing

I make this recipe in a 9×13-inch casserole dish, and it gives me approximately 8 servings.

Prep Time: 20 minutes

Cooking Time: 40 minutes

Total Time: 1 hour

Servings: 8

Calories: Approximately 485 kcal per serving

Variations

For a marshmallow topping, I can reduce or omit the pecan crumble and scatter mini marshmallows over the sweet potatoes during the final few minutes of baking. I watch them carefully because they can brown quickly.

When I want even more texture, I add extra chopped pecans to the crumble. Walnuts can also work when I want a slightly different nutty flavor.

For a warmer spice profile, I sometimes add a small pinch of nutmeg, ginger, or allspice along with the cinnamon. I keep these spices subtle so they don’t overpower the natural flavor of the sweet potatoes.

If I prefer a less sweet casserole, I reduce the brown sugar in the filling or slightly decrease the amount used in the topping. The sweet potatoes already provide plenty of natural sweetness.

For a richer filling, I can replace the whole milk with half-and-half or a little heavy cream. This gives me an especially creamy casserole that’s well suited to holiday dinners.

Storage/Reheating

I let leftover sweet potato casserole cool before transferring it to an airtight container or covering the casserole dish tightly. I store it in the refrigerator for up to 3–4 days.

To reheat a larger portion, I cover the casserole with foil and warm it in a 350°F (175°C) oven until heated through. I can remove the foil toward the end if I want to help the pecan topping regain some of its crispness.

For an individual serving, I use the microwave for convenience. The topping won’t stay quite as crisp, but the filling reheats nicely.

If I want to prepare the casserole ahead, I make the sweet potato filling and place it in the baking dish, then refrigerate it covered. I prefer to keep the pecan topping separate and add it shortly before baking so it stays crumbly and crisp.

FAQs

Can I make sweet potato casserole ahead of time?

Yes. I prepare the sweet potato filling, spread it into my casserole dish, cover it, and refrigerate it. I keep the pecan topping separate and add it before baking. If the casserole is going into the oven cold, I allow a little additional baking time as needed.

Can I use canned sweet potatoes instead of fresh sweet potatoes?

I can use canned sweet potatoes when I need a shortcut, but I drain them very well before mashing. Since some canned sweet potatoes are packed in syrup, I also check their sweetness before adding the full amount of brown sugar.

How do I know when the sweet potato casserole is done?

I look for a filling that is hot and slightly puffed around the edges and a topping that has become golden and crisp. With this recipe, that generally takes about 25–30 minutes at 375°F (190°C).

Can I make this sweet potato casserole without pecans?

Yes. I can leave the pecans out and make the brown sugar crumble without them. I can also use a marshmallow topping or a simple cinnamon-brown sugar topping when I need a nut-free variation.

Why is my sweet potato casserole watery?

I usually get a watery filling when the cooked sweet potatoes haven’t been drained thoroughly or when too much liquid has been added. I let the potatoes drain well after boiling and stick to the recommended amount of milk. Also I make sure the casserole has enough time to bake and rest before serving.

Conclusion

This Sweet Potato Casserole gives me everything I want from a comforting holiday side dish: creamy sweet potatoes, warm vanilla and cinnamon flavors, plenty of brown sugar, and a crisp buttery pecan topping. The contrast between the smooth filling and crunchy crumble makes every serving especially satisfying.

I love making it for Thanksgiving and Christmas, but its simple preparation makes it easy enough for other family dinners throughout fall and winter. Whether I serve it alongside a holiday feast or a cozy weeknight meal, I get a warm, classic casserole that always feels right at home on the table.

Sweet Potato Casserole