Best Easy Sweet Potato Casserole Recipe

Sweet potato casserole topped with a crunchy pecan streusel or toasted marshmallows is a beloved vegetarian holiday family tradition. Sweet, creamy, and comforting, it's a Thanksgiving table essential across the South.

Cook 90 min Difficulty NORMAL 340 kcal
#vegetarian #holiday #comfort food
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Ingredients
Main ingredients
  • sweet potatoes 3 lbs
  • unsalted butter 0.25 cup
  • whole milk 0.5 cup
  • eggs 2 pieces
Seasonings/Sauce
  • granulated sugar 0.75 cup
  • vanilla extract 1 tsp
  • salt 0.5 tsp
  • ground cinnamon 0.5 tsp
  • pecan halves 0.75 cup
  • light brown sugar 0.33 cup
  • all-purpose flour 0.33 cup
  • unsalted butter (for topping) 0.25 cup
  • mini marshmallows (optional) 1 cup
Nutrition summary
Carbohydrates 54 g 62%
Protein 4 g 5%
Fat 13 g 33%
Serving size 210g
Cooking steps
  1. 1

    Preheat your oven to 350°F (175°C). Scrub and peel the sweet potatoes, then cut into large chunks for even cooking.

  2. 2

    Place sweet potato chunks in a large pot and cover with water. Bring to a boil, reduce heat to medium, and simmer for 20–25 minutes until very tender. Drain thoroughly to prevent excess moisture.

  3. 3

    Mash the hot sweet potatoes in a large bowl. Add 0.25 cup butter, granulated sugar, milk, eggs, vanilla extract, salt, and cinnamon. Beat until smooth and creamy; consistency should be thick but spreadable.

  4. 4

    Transfer the sweet potato mixture to a greased 9x13-inch baking dish, spreading evenly.

  5. 5

    For pecan streusel: In a bowl, mix brown sugar, flour, 0.25 cup melted butter, and pecan halves until crumbly. Evenly sprinkle streusel over the casserole. For marshmallow topping, wait to add marshmallows until the last 15 minutes of baking.

  6. 6

    Bake for 35 minutes. If adding marshmallows, remove casserole, top with mini marshmallows, and bake for another 10–15 minutes or until golden brown and bubbly around the edges. Let cool slightly before serving.

Personalized Q&A
Q. What's the key ingredient in this recipe?
Sweet potatoes are the foundation of this casserole, providing natural sweetness, creamy texture, and the dish’s signature orange color. The combination of sweet potatoes, butter, and vanilla extract is what creates the beloved flavor profile, with either a pecan streusel or marshmallow topping to finish.
Q. How should I control moisture in the sweet potatoes for a perfect casserole texture?
After boiling, be sure to drain the sweet potatoes thoroughly. Excess water can make the casserole runny. Mash them while hot for a smooth blend, and ensure your mixture is thick but still spreadable before baking. This helps the casserole set nicely and avoids a watery result.
Q. How do I prevent my casserole topping from getting too dark or undercooked?
When baking, use the center rack and watch closely during the last 15 minutes. If you’re adding marshmallows, only add them after the main casserole has baked for 35 minutes—this prevents over-browning. For pecan streusel, ensure it’s evenly distributed so it crisps without burning.
Q. How many calories and carbs are in each serving?
Each serving of this sweet potato casserole provides approximately 340 kcal, with 54g of carbs (about 62% of calories), 4g protein, and 13g fat. This makes it a moderately energy-rich, carb-forward vegetarian dish, perfect as a holiday side.
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