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Sweet Potato Casserole with Candied Pecan Marshmallow Topping Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.2 from 49 reviews
  • Author: Maria
  • Prep Time: 15 minutes
  • Cook Time: 90 minutes
  • Total Time: 1 hour 45 minutes
  • Yield: 8 servings
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Description

This Sweet Potato Casserole features creamy mashed sweet potatoes seasoned with warm spices and vanilla, topped with a crunchy candied pecan streusel and gooey toasted mini marshmallows. Perfect as a comforting side dish for holiday dinners or family gatherings, it combines sweet, buttery, and nutty flavors with a delightful texture contrast.


Ingredients

Scale

Sweet Potato Mixture

  • 3 pounds sweet potatoes
  • 3 tablespoons unsalted butter
  • 1/2 teaspoon vanilla extract
  • 1/4 cup half and half
  • 1/2 teaspoon pumpkin pie spice
  • 1/4 cup brown sugar
  • 1 teaspoon salt

Candied Pecan Topping

  • 4 tablespoons butter, melted
  • 1/3 cup brown sugar
  • 1/3 cup all-purpose flour
  • 1/2 teaspoon ground cinnamon
  • 1/8 teaspoon salt
  • 1/2 cup pecans, finely chopped

Additional Topping

  • 2 cups mini marshmallows


Instructions

  1. Preheat and bake sweet potatoes: Preheat the oven to 350°F (175°C). Prick each sweet potato several times with a fork and place them on a baking sheet. Bake for 50-60 minutes or until the sweet potatoes are tender when pierced with a fork.
  2. Prepare sweet potato mixture: When the sweet potatoes are cool enough to handle, cut them open and scoop the insides into a large mixing bowl. Add 3 tablespoons unsalted butter, vanilla extract, half and half, pumpkin pie spice, brown sugar, and salt. Mash the mixture together until smooth and creamy.
  3. Transfer to casserole dish: Spread the mashed sweet potato mixture evenly into a 2-quart casserole dish. Set aside while preparing the topping.
  4. Make pecan topping: In a medium bowl, combine melted butter, brown sugar, all-purpose flour, cinnamon, salt, and chopped pecans. Stir together until the mixture is well combined and crumbly.
  5. Apply topping and bake: Sprinkle the pecan topping evenly over the sweet potato layer. Bake the casserole uncovered for 20 minutes to allow the topping to set and become golden.
  6. Add marshmallows and finish baking: Remove the casserole from the oven and evenly scatter mini marshmallows over the top. Return to the oven and bake for an additional 3-5 minutes until the marshmallows are melted and golden brown on top.

Notes

  • You can prepare the sweet potatoes a day ahead and refrigerate to save time.
  • For a vegan version, substitute butter and half and half with plant-based alternatives and use vegan marshmallows.
  • Be careful not to overbake after adding marshmallows to avoid burning.
  • Chop pecans finely for a more even topping texture.