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Cheesy Butternut Squash Casserole

  • Author: Sally Thompson
  • Prep Time: 25 minutes
  • Cook Time: 55 minutes
  • Total Time: 1 hour 20 minutes
  • Yield: 8 servings 1x
  • Category: Casserole
  • Method: Baking
  • Cuisine: American

Description

Warm, gooey, and loaded with comfort—this Cheesy Butternut Squash Casserole blends roasted butternut squash, savory Italian sausage, and three kinds of cheese into a golden, bubbling masterpiece. It's the perfect easy dinner for cozy nights, a flavorful side for holiday tables, and a go-to for quick breakfast or healthy snack leftovers. Ideal for fall food ideas and hearty dinner recipes, this dish checks all the boxes for flavor, simplicity, and flexibility.


Ingredients

Scale

4 cups butternut squash, peeled and cubed

1 pound Italian sausage

1 medium onion, chopped

2 cloves garlic, minced

2 tablespoons olive oil

1 teaspoon salt

1/2 teaspoon black pepper

1 tablespoon fresh sage, chopped

1 1/2 cups shredded mozzarella cheese

1 cup shredded sharp white cheddar cheese

1/4 cup grated Parmesan cheese (optional)

Fresh sage leaves for garnish (optional)


Instructions

1. Preheat oven to 400°F (200°C).

2. Toss butternut squash with olive oil, salt, pepper, and half the sage. Roast for 25–30 minutes until tender and lightly browned.

3. While squash roasts, brown the sausage in a skillet. Add onion, cook until soft, then stir in garlic. Cook 1 minute.

4. Reduce oven to 375°F (190°C). In a large bowl, mix roasted squash, sausage mixture, and most of the cheese.

5. Spread mixture in a greased 9x13 baking dish. Top with remaining cheese and Parmesan. Garnish with whole sage leaves.

6. Bake uncovered for 20–25 minutes until bubbly. Broil 2–3 minutes for a golden top.

7. Let rest 5–10 minutes before serving.


Notes

For vegetarian version, substitute sausage with roasted mushrooms or lentils.

Pre-shredded cheese doesn’t melt as well—use freshly grated cheese.

To save time, use pre-cut butternut squash or roast the day before.


Nutrition

  • Serving Size: 1 slice
  • Calories: 420
  • Sugar: 4g
  • Sodium: 670mg
  • Fat: 30g
  • Saturated Fat: 12g
  • Unsaturated Fat: 14g
  • Trans Fat: 0g
  • Carbohydrates: 18g
  • Fiber: 3g
  • Protein: 21g
  • Cholesterol: 70mg

Keywords: cheesy casserole, butternut squash, fall dinner, comfort food, holiday side dish