Introduction

When the holidays roll around or you’re craving a comforting side, this scalloped sweet potatoes with brown sugar recipe is a perfect choice. Creamy, sweet, and tender, it pairs wonderfully with any festive meal or cozy dinner. The optional marshmallow topping adds a nostalgic, gooey touch that everyone will love.

A white scalloped round dish filled with several layers of thin orange sweet potato slices arranged in a circular pattern, covering the entire surface. The sweet potato layer is topped with a creamy white sauce drizzled evenly in wavy lines across the top. Small green herb bits and a sprinkle of black pepper are scattered over the sauce, adding texture and color contrast. The dish sits on a blue and white striped cloth on a white marbled surface, with a woman's hand holding a wooden spoon next to it and a small white bowl with a powdery ingredient in the background. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

2 large sweet potatoes (about 1½ pounds), peeled and thinly sliced (⅛ inch thick)
1 cup heavy cream
½ cup packed brown sugar
3 tablespoons butter
1 teaspoon cinnamon
½ teaspoon nutmeg
¼ teaspoon salt
1 teaspoon vanilla extract
½ cup mini marshmallows (optional for topping)

Instructions

Step 1: Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish with butter or non-stick spray.
Step 2: Peel and thinly slice the sweet potatoes to about ⅛ inch thickness for even cooking. Arrange the slices neatly in the prepared baking dish, slightly overlapping.
Step 3: In a medium saucepan over medium heat, melt the butter. Add brown sugar, heavy cream, cinnamon, nutmeg, salt, and vanilla extract. Whisk continuously until the mixture is smooth and the sugar has completely dissolved.
Step 4: Pour the warm brown sugar sauce evenly over the sweet potatoes, using a spatula to gently coat all slices.
Step 5: Cover the dish tightly with aluminum foil and bake for 35 minutes.
Step 6: Remove the foil and bake uncovered for another 20 to 25 minutes, until the sweet potatoes are fork-tender and the sauce is bubbling.
Step 7: If desired, sprinkle mini marshmallows over the top during the last 5 minutes of baking. Bake until the marshmallows are golden and gooey.
Step 8: Let the casserole cool slightly before serving. Optionally, garnish with a sprinkle of cinnamon or fresh herbs.

Tips & Variations

Use a mandoline slicer for uniform sweet potato slices to ensure even cooking.
For a fruity twist, layer thinly sliced apples between the sweet potato layers.
Try adding cooked onion slices for a savory depth without overpowering the sweetness.
The marshmallow topping is optional; omit it for a less sweet, more classic casserole.
You can prepare the brown sugar sauce a day ahead to save time on baking day.

Storage

Allow leftovers to cool to room temperature, then store in an airtight container in the refrigerator for up to 4 days. To reheat, warm portions in a 300°F oven until heated through, or use a microwave for convenience. Adding a splash of cream before reheating helps keep the dish moist and flavorful.

How to Serve

A round white scalloped ceramic dish holds a layered sweet potato casserole placed on a wooden board with a gray cloth underneath, all on a white marbled surface. The bottom layer appears creamy and smooth, light beige in color. On top, there is a thick layer of evenly spaced roasted sweet potato slices with a bright orange color and slightly browned edges. The casserole is drizzled with white sauce in diagonal lines and sprinkled with small brown crumbles and tiny green herb leaves for garnish. The overall texture looks creamy and soft, with crunchy bits on top adding contrast. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular potatoes instead of sweet potatoes?

You can, but the flavor and natural sweetness will differ significantly. Sweet potatoes provide the signature taste and vibrant color of this dish.

How thin should I slice the sweet potatoes?

Slicing about ⅛ inch thick is ideal. Thicker slices may not cook evenly and can result in a firmer texture.

Is it necessary to use marshmallows?

No, marshmallows are optional and mainly add a sweet, gooey topping. You can leave them off if you prefer a less sweet casserole.

Can I make this dish ahead of time?

Yes, you can assemble the dish, cover it tightly, and refrigerate it for up to 24 hours before baking.