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A casserole dish with a spoon and a sprig of sage.

Butternut Squash Casserole Recipe

Course: Side Dish
Cuisine: American
Prep Time: 20 minutes
Cook Time: 45 minutes
Total Time: 1 hour 5 minutes
Servings: 8
Calories: 322kcal
Author: Becky Hardin
This winter squash casserole is herb-y, creamy, cozy, and all kinds of delicious. It's the perfect side dish when you need something comforting.
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Ingredients

  • 4 tablespoons unsalted butter divided (½ stick)
  • ½ onion chopped
  • 1 teaspoon kosher salt
  • teaspoon ground black pepper
  • 2 cloves garlic minced
  • teaspoon ground nutmeg
  • 1 teaspoon chopped fresh sage
  • 1 cup heavy cream
  • 2½-3 pound butternut squash peeled and sliced into thin pieces
  • cups freshly shredded white cheddar cheese divided in thirds
  • ½ cup Panko breadcrumbs

Instructions

  • Preheat oven to 375°F.
  • Heat 2 tablespoons of butter in a skillet set over medium heat.
    4 tablespoons unsalted butter
  • Add in the onion, salt, and pepper, sautéing until softened.
    ½ onion, 1 teaspoon kosher salt, ⅛ teaspoon ground black pepper
  • Stir in the garlic, nutmeg, and chopped sage and cook for another minute.
    2 cloves garlic, ⅛ teaspoon ground nutmeg, 1 teaspoon chopped fresh sage
  • Stir in the heavy cream, and let the mixture simmer for a couple minutes. Taste, and add salt if needed.
    1 cup heavy cream
  • Layer half of the butternut squash at the bottom of a greased casserole dish, followed by ⅓ of the cream mixture, followed by ½ cup of cheese. Repeat this process 2 more times, but leave the remaining ½ cup of cheese off.
    2½-3 pound butternut squash, 1½ cups freshly shredded white cheddar cheese
    A white baking dish filled with shredded cheese.
  • Cover the casserole dish with foil, and bake for 30 minutes
  • Melt the remaining 2 tablespoons of butter and combine it with the breadcrumbs.
    ½ cup Panko breadcrumbs
  • Remove the foil, and sprinkle the remaining ½ cup of cheese and buttered breadcrumbs over the casserole.
  • Return the casserole to the oven, and bake uncovered for an additional 10-15 minutes, or until the top is golden brown.
    A casserole dish with sage sprigs on it.

Notes

Storage: Store butternut squash casserole tightly covered in the refrigerator for up to 5 days or in the freezer for up to 3 months.

Nutrition

Calories: 322kcal | Carbohydrates: 22g | Protein: 8g | Fat: 24g | Saturated Fat: 15g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Trans Fat: 0.2g | Cholesterol: 70mg | Sodium: 472mg | Potassium: 571mg | Fiber: 3g | Sugar: 5g | Vitamin A: 15893IU | Vitamin C: 31mg | Calcium: 252mg | Iron: 1mg