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Ultra close up macro food photography of sweet potato casserole topped with golden toasted marshmallows and crunchy brown sugar pecan streusel

Cozy Southern Sweet Potato Casserole with Toasted Marshmallows and Brown Sugar Pecan Streusel

The ultimate holiday comfort side dish featuring velvety whipped spiced sweet potatoes topped with both a buttery brown sugar pecan streusel and golden toasted mini marshmallows. Decadent, nostalgic, and guaranteed to steal the show on your Thanksgiving and holiday dinner table!
Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings: 10 servings
Calories: 345

Ingredients
  

Whipped Sweet Potato Base
  • 4 lbs sweet potatoes
  • 0.5 cup unsalted butter
  • 0.33 cup pure maple syrup
  • 0.33 cup whole milk
  • 2 large eggs
  • 1.5 tsp pure vanilla extract
  • 1 tsp ground cinnamon
  • 0.5 tsp ground nutmeg
  • 0.25 tsp ground ginger
  • 0.5 tsp fine sea salt
Crispy Brown Sugar Pecan Streusel
  • 1 cup pecans
  • 0.5 cup light brown sugar
  • 0.33 cup all-purpose flour
  • 4 tbsp unsalted butter
  • 0.5 tsp ground cinnamon
  • 0.25 tsp fine sea salt
Gooey Marshmallow Crown
  • 2.5 cups mini marshmallows

Method
 

Cook and Mash Sweet Potatoes
  1. Preheat your oven to 375°F (190°C) and lightly grease a 9x13-inch ceramic baking dish with butter.
  2. Peel and cube the sweet potatoes into 1-inch chunks. Place in a large pot, cover with cold salted water, bring to a boil, and cook for 15 to 20 minutes until completely fork-tender. Drain thoroughly in a colander and let steam dry for 3 minutes.
Whip the Spiced Filling
  1. Transfer hot sweet potatoes to a large mixing bowl. Mash roughly with a potato masher, then beat with an electric hand mixer on medium speed until smooth.
  2. Add melted butter, pure maple syrup, whole milk, beaten eggs, vanilla extract, cinnamon, nutmeg, ginger, and sea salt. Beat for 1 to 2 minutes until light, fluffy, and creamy. Spread evenly into the prepared baking dish.
Bake with Pecan Streusel
  1. In a small bowl, stir together chopped pecans, brown sugar, flour, cinnamon, and salt. Pour in melted butter and toss with a fork until crumbly clusters form.
  2. Scatter the pecan streusel evenly over the sweet potato puree. Transfer baking dish to the middle oven rack and bake at 375°F for 25 to 30 minutes until bubbling around the edges.
Toast Marshmallow Crown & Serve
  1. Carefully remove the casserole from the oven. Scatter mini marshmallows across the top (either covering entirely or leaving streusel ribbons visible).
  2. Return to the oven for 4 to 6 minutes, watching like a hawk, until marshmallows puff up and turn gorgeous golden brown (or switch oven to BROIL on LOW for 60 to 90 seconds for deep campfire caramelization).
  3. Let rest for 8 to 10 minutes to allow the custard filling to set slightly before scooping and serving warm!

Nutrition

Serving: 1gCalories: 345kcalCarbohydrates: 52gProtein: 4gFat: 14gSaturated Fat: 6gCholesterol: 52mgSodium: 160mgPotassium: 490mgFiber: 4.8gSugar: 28gVitamin A: 280IUVitamin C: 22mgCalcium: 85mgIron: 1.4mg

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