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Freshly baked Boston Market sweet potato casserole with golden brown streusel topping in a white dish.

Boston Market Sweet Potato Casserole

A spot-on copycat of the classic Boston Market sweet potato casserole! Creamy, perfectly sweet filling topped with a crunchy brown sugar pecan streusel. Easy to make, customizable, and ideal for holidays or comforting family dinners.
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Prep Time 20 minutes
Cook Time 35 minutes
Resting Time 10 minutes
Total Time 1 hour 5 minutes
Servings: 8 people
Course: dinner, Side Dish, Thanksgiving
Cuisine: American, Southern
Calories: 310
Ingredients Equipment Method Notes

Ingredients
  

  • 4 cups Mashed sweet potatoes About 4 large sweet potatoes cooked and mashed
  • ½ cup Granulated sugar
  • ⅓ cup Melted butter
  • 2 Large eggs Lightly beaten
  • 1 tsp Vanilla extract Pure recommended
  • ½ cup Milk Whole or any preferred milk
  • ½ tsp Ground cinnamon
  • 1 pinch Salt
  • For the Streusel Topping:
  • Amount Unit Name Notes
  • ⅔ cup Brown sugar Light or dark
  • ⅓ cup All-purpose flour
  • ⅓ cup Melted butter
  • ½ cup Chopped pecans Optional: toasted for extra flavor

Equipment

  • 1 9x13 Baking Dish Greased
  • 1 Large mixing bowl For sweet potato mixture
  • 1 Medium mixing bowl For streusel topping
  • 1 Potato masher or hand mixer To mash sweet potatoes
  • 1 Spatula For spreading the filling

Method
 

  1. For the Sweet Potato Filling:
  2. Peel and chop sweet potatoes. Boil or steam until fork-tender, about 15–20 minutes. Drain and mash until smooth.
  3. In a large bowl, combine mashed sweet potatoes, sugar, melted butter, eggs, vanilla, milk, cinnamon, and a pinch of salt. Mix until smooth.
  4. Pour the sweet potato mixture into a greased 9x13-inch baking dish and spread evenly.
  5. For the Streusel Topping:
  6. In a medium bowl, mix brown sugar and flour.
  7. Stir in melted butter until crumbly.
  8. Fold in chopped pecans.
  9. To Assemble and Bake:
  10. Sprinkle streusel topping evenly over the sweet potato filling.
  11. Bake at 350°F (175°C) for 30–35 minutes until the topping is golden brown.
  12. Let rest for 10 minutes before serving for best texture.

Notes

  • For a dairy-free version, use plant-based butter and non-dairy milk like oat or almond.
  • For gluten-free, replace all-purpose flour with almond flour or a gluten-free blend.
  • Reduce sugar by 25–30% for a less sweet casserole.