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Butternut Squash Casserole Gratin Recipe

Butternut Squash Casserole Gratin Recipe


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4.9 from 15 reviews

  • Total Time: 1 hour 5 minutes
  • Yield: 6 1x

Description

Butternut Squash Casserole delivers creamy comfort straight from your kitchen with layers of golden roasted squash melting together under a crispy Parmesan cheese crust. Weeknight dinners get an easy upgrade when this simple, hearty dish comes bubbling hot from the oven.


Ingredients

Scale

Main Ingredients:

  • 2 lbs butternut squash
  • 1 cup heavy cream
  • 1 cup shredded Gruyere cheese
  • 1 medium onion

Supporting Ingredients:

  • 2 cloves garlic
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • ½ teaspoon nutmeg
  • ¼ teaspoon cayenne pepper
  • 2 tablespoons olive oil

Topping Ingredients:

  • 1 cup breadcrumbs
  • ½ cup grated Parmesan cheese
  • 2 tablespoons melted butter

Instructions

  1. Peel, seed, and slice 2 lbs of butternut squash into uniform ½-inch cubes. Pat the cubes dry with paper towels to remove excess moisture.
  2. Heat 2 tablespoons olive oil in a large skillet over medium heat. Sauté 1 chopped onion and 2 minced garlic cloves until translucent and fragrant, about 4-5 minutes.
  3. In a large mixing bowl, combine the roasted squash cubes, sautéed onions, 1 cup heavy cream, 1 cup shredded Gruyere cheese, 1 teaspoon salt, ½ teaspoon black pepper, ½ teaspoon nutmeg, and ¼ teaspoon cayenne pepper. Gently fold ingredients until evenly distributed.
  4. Transfer the squash mixture to a 9×13-inch baking dish, spreading it into an even layer. Ensure the ingredients are well-distributed and smooth on top.
  5. Mix 1 cup breadcrumbs, ½ cup grated Parmesan cheese, and 2 tablespoons melted butter in a small bowl. Sprinkle this topping evenly across the casserole surface.
  6. Preheat the oven to 375°F. Bake the casserole for 35-40 minutes, until the top turns golden brown and the squash becomes tender when pierced with a fork.
  7. Remove from the oven and let the casserole rest for 10 minutes. Garnish with fresh chopped herbs before serving.

Notes

  • Select a squash with deep orange color and smooth skin for the best flavor and texture.
  • Slice the squash thinly and evenly to ensure uniform cooking and a beautiful layered appearance.
  • Swap heavy cream for half-and-half or whole milk if watching calories, but know the richness will decrease slightly.
  • For a gluten-free version, replace breadcrumbs with crushed gluten-free crackers or almond meal in the topping.
  • Prep Time: 20 minutes
  • Cook Time: 45 minutes
  • Category: Casseroles
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 6
  • Calories: 320 kcal
  • Sugar: 6 g
  • Sodium: 400 mg
  • Fat: 22 g
  • Saturated Fat: 9 g
  • Unsaturated Fat: 11 g
  • Trans Fat: 0.5 g
  • Carbohydrates: 20 g
  • Fiber: 3 g
  • Protein: 10 g
  • Cholesterol: 55 mg