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Sweet Potato Casserole with Marshmallows

Sweet Potato Casserole with Marshmallow Streusel Topping

5 from 7 votes
This recipe for Sweet Potato Casserole with Marshmallow Streusel Topping is rich and flavorful. It's topped with a delicious crunchy streusel topping and toasted and gooey mini marshmallows, making for the best Thanksgiving side dish!

Ingredients
 

FOR THE SWEET POTATOES:

  • 3 pounds sweet potatoes
  • 1/3 cup butter (softened)
  • 1/3 cup heavy cream
  • 1/2 cup brown sugar
  • 2 teaspoons vanilla extract
  • 1/2 tsp salt
  • 2 eggs

MARSHMALLOW STREUSEL TOPPING:

  • ½ cup all-purpose flour
  • 2/3 cup brown sugar (packed)
  • 1/3 cup unsalted butter (melted)
  • 1/3 cup oats (or chopped pecans)
  • ¼ teaspoon kosher salt
  • ½ teaspoon cinnamon
  • 2-3 cups mini marshmallows

Instructions
 

  • Peel sweet potatoes. Dice into 1-inch cubes. Add to a large pot of salted water. Bring to a boil over high heat, then lower the heat to a simmer and cook until the potatoes are tender about 15-20 minutes.
  • Drain sweet potatoes. Using a potato masher, mash well so that there are no big chunks.
  • Add softened butter, heavy cream, brown sugar, vanilla, and salt. Mix by hand or for a smoother texture, with a hand mixer or electric mixer. Stir until completely combined then mix in eggs until incorporated.
  • Preheat the oven to 350 degrees. Butter or grease a 9x13 inch baking dish and transfer the sweet potato mixture to the dish.
  • For the topping, in a medium bowl, combine all topping ingredients: flour, brown sugar, melted butter, oats, salt, and cinnamon. Sprinkle half of the streusel evenly over the casserole.
  • Bake for 25 minutes at 350 degrees, until set in the middle and golden on top. Top with 2-3 cups of mini marshmallows and bake for another 5-7 minutes, until the marshmallows are lightly brown and puffy.
  • Serve warm.

The nutrition facts provided are calculated using a third-party tool and are estimates only. Actual nutritional content may vary based on the ingredients and brands you use, as well as portion sizes. For accurate results, please consult a registered dietitian or nutritionist.

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