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Ingredients for butternut squash casserole including squash, pecans, oats, maple syrup and spices

Creamy Butternut Squash Casserole with Pecan Oat Topping

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Roasted butternut squash is mashed with maple syrup and warm spices, then baked under a buttery pecan-oat topping for an easy Thanksgiving side dish.

  • Total Time: 1 Hour 20 minutes
  • Yield: 8 servings

Ingredients

Casserole

  • 3 lb butternut squash, peeled, seeded, and cubed
  • 1 tbsp olive oil
  • 2 tbsp unsalted butter, melted
  • 2 tbsp pure maple syrup
  • 2 large eggs
  • 1/3 cup whole milk
  • 1 tsp ground cinnamon
  • 1/4 tsp ground nutmeg
  • 3/4 tsp kosher salt, divided
  • 1/4 tsp black pepper

Pecan Oat Topping

  • 3/4 cup chopped pecans
  • 1/2 cup old-fashioned rolled oats
  • 1/4 cup light brown sugar
  • 2 tbsp all-purpose flour
  • 3 tbsp unsalted butter, melted
  • Pinch of salt

Instructions

  1. Preheat the oven to 425°F. Toss the butternut squash with olive oil and about ¼ teaspoon salt.
  2. Spread on a baking sheet and roast for 30–35 minutes, turning once, until completely tender.
  3. Reduce oven temperature to 375°F. Lightly grease a 2½-quart casserole dish.
  4. Mash the roasted squash in a large bowl.
  5. Whisk together 2 tablespoons melted butter, maple syrup, eggs, milk, cinnamon, nutmeg, remaining salt, and black pepper.
  6. Stir the mixture into the mashed squash and spread evenly in the casserole dish.
  7. Combine pecans, oats, brown sugar, flour, and a pinch of salt. Stir in 3 tablespoons melted butter.
  8. Sprinkle topping evenly over the squash.
  9. Bake for 25–30 minutes, until hot and golden on top.
  10. Rest for 10 minutes before serving.

Notes

For make-ahead preparation, assemble the squash filling up to 24 hours in advance and refrigerate. Keep the topping separate and add it immediately before baking.

Approximate nutrition per serving:
Calories 300 | Protein 5g | Carbohydrates 34g | Fat 18g | Fiber 4g | Sugar 14g | Sodium 230mg

  • Author: Emily Carter
  • Prep Time: 20 minutes
  • Cook Time: 1 hour
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian