Ingredients:

  • 4 lbs Sweet Potatoes, peeled
  • ½ cup Unsalted Butter, melted
  • ½ cup Granulated Sugar
  • ¼ cup Light Brown Sugar, packed (Filling)
  • 2 Large Eggs, lightly beaten
  • ¼ cup Whole Milk or Half-and-Half
  • 1 tsp Pure Vanilla Extract
  • 1 tsp Ground Cinnamon (Filling)
  • ½ tsp Freshly Grated Nutmeg
  • ½ tsp Fine Sea Salt
  • ½ cup All-Purpose Flour (Topping)
  • ½ cup Light Brown Sugar, packed (Topping)
  • ¼ cup Unsalted Butter, cold and cubed (Topping)
  • 1 cup Chopped Pecans (Topping)
  • ¼ tsp Ground Cinnamon (Topping)

Instructions:

  1. Prep Potatoes: Preheat oven to 375°F (190°C). Peel the sweet potatoes and chop them into uniform 1-inch cubes.
  2. Cook Potatoes: Place the cubes in a large pot, cover with cold water, and add a pinch of salt. Bring to a boil, then reduce heat and simmer until fork-tender (about 15-20 minutes).
  3. Drain and Mash: Drain the potatoes thoroughly. Transfer them to a large mixing bowl. Use an electric mixer or potato masher to mash them until smooth.
  4. Combine Wet Ingredients: Add the melted butter, both sugars, milk, eggs, and vanilla extract to the mashed potatoes. Mix thoroughly until well combined and smooth.
  5. Season: Stir in the cinnamon, nutmeg, and sea salt. Taste and adjust seasoning or sweetness if required.
  6. Transfer: Pour the sweet potato mixture into the prepared 9x13 inch baking dish, smoothing the top with a spatula.
  7. Combine Dry Ingredients (Streusel): In a separate medium bowl, whisk together the flour, brown sugar, and cinnamon for the topping.
  8. Cut in the Butter: Add the cold, cubed butter to the dry ingredients. Use your fingertips or a pastry cutter to 'cut' the butter into the mixture until coarse crumbs form (the largest pieces should be about the size of small peas).
  9. Add Nuts: Gently fold in the chopped pecans.
  10. Assemble: Sprinkle the streusel mixture evenly over the sweet potato filling, covering the entire surface.
  11. Bake: Place the casserole in the preheated oven. Bake for 30–40 minutes.
  12. Check for Doneness: The filling should be set (it shouldn't jiggle much), and the streusel topping should be golden brown and bubbling slightly.
  13. Rest: Remove from the oven and let the casserole rest for at least 10 minutes before serving. This allows the filling to fully set up.