Butternut Squash Casserole Recipe

This easy and healthy butternut squash casserole recipe is a perfect blend of sweet and savory flavors, making it an ideal side dish for holidays, potlucks, or weeknight dinners. With hearty Italian sausage, vibrant kale, tender butternut squash, and a crispy Parmesan-panko topping, this dish is as nutritious as it is comforting. Whether you’re looking for a gluten-free alternative or a vegetarian twist, this versatile recipe has something for everyone.

Ingredients

For the Casserole

• 1/2 pound ground sweet Italian sausage
• 1 tablespoon olive oil
• 4-6 ounces thinly sliced white onion (about 1 medium onion)
• 2 tablespoons fresh sage, chopped
• 3 cloves garlic, minced
• 2 cups chopped kale
• 1/4 cup low-sodium chicken stock
• 4 cups cubed butternut squash (approximately 1 1/2 pounds)
• Salt, to taste
• Freshly ground black pepper, to taste

For the Breadcrumb Topping

• 3 tablespoons unsalted butter
• 3/4 cup panko breadcrumbs
• 1/3 cup freshly grated Parmesan cheese (at room temperature)
• 1 tablespoon fresh sage, chopped
• Salt, to taste
• Freshly ground black pepper, to taste

Instructions

1. Prepare the Oven and Dish: Preheat the oven to 350°F. Lightly grease the bottom and sides of a casserole dish with butter or cooking spray. Set aside.
2. Cook the Sausage: Heat a large skillet over medium-high heat. Add the ground sweet Italian sausage and cook, stirring occasionally, until crumbled and browned, about 8-10 minutes. Drain any excess liquid and return the skillet to the heat.
3. Sauté the Aromatics and Kale: Add the olive oil and sliced onion to the skillet with the sausage. Cook, stirring occasionally, until the onions are softened, about 2-3 minutes. Add the chopped sage, minced garlic, kale, and chicken stock. Stir to combine and simmer for 3-5 minutes, or until the kale softens and the broth reduces slightly.
4. Assemble the Casserole: Place the cubed butternut squash in the prepared casserole dish. Pour the sausage and kale mixture over the squash. Season with salt and pepper to taste. Gently stir to combine, ensuring the squash is fully incorporated. Spread the mixture into an even layer in the dish.
5. Prepare the Breadcrumb Topping: Wipe the skillet clean and return it to medium-high heat. Melt the butter, swirling the pan occasionally to coat the surface evenly. Once melted and bubbling, add the panko breadcrumbs and stir constantly until golden brown and lightly toasted. Remove from heat and let cool slightly. Stir in the Parmesan cheese, chopped sage, salt, and pepper until well combined.
6. Add the Topping and Bake: Evenly spread the breadcrumb mixture over the casserole. Bake in the preheated oven for 20 minutes.
7. Cover and Finish Baking: Remove the dish from the oven and cover with aluminum foil. Return to the oven and bake for an additional 15-20 minutes, or until the butternut squash is tender.
8. Serve: Remove the casserole from the oven, discard the foil, and let it stand for 5 minutes before serving. Serve warm and enjoy!

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Why You’ll Love This Recipe

• Comforting and Nutritious: This casserole combines hearty sausage, vibrant kale, and sweet butternut squash for a nutrient-packed dish.
• Perfect for Any Occasion: Whether it’s a holiday meal or a weeknight dinner, this casserole is versatile and crowd-pleasing.
• Flavorful Topping: The Parmesan-panko breadcrumb topping adds a satisfying crunch and rich flavor to every bite.

Tips

• Cut Even Cubes: Ensure the butternut squash is cut into evenly sized cubes for consistent cooking.
• Prepare in Advance: Assemble the casserole a day ahead, cover, and refrigerate. Add the breadcrumb topping just before baking.
• Use Fresh Sage: Fresh sage enhances the flavor, but dried sage can work in a pinch. Use about half the amount if substituting dried.

Variations and Substitutions

• Vegetarian Option: Replace the sausage with plant-based crumbles or omit entirely and add more kale.
• Alternative Greens: Swap kale for spinach, Swiss chard, or collard greens.
• Different Cheese: Use Gruyère or Pecorino Romano instead of Parmesan for a unique twist.
• Gluten-Free: Substitute panko breadcrumbs with gluten-free breadcrumbs.

FAQs

Can I freeze this casserole? Yes! Assemble the casserole without the breadcrumb topping and freeze. When ready to bake, thaw completely, add the topping, and bake as directed.

How do I know when the squash is done? The squash should be tender when pierced with a fork but not mushy.

Can I use pre-cut butternut squash? Absolutely! Pre-cut squash saves time and works perfectly.

Serving and Suggestions

• Pairings: Serve with a fresh green salad or roasted vegetables for a complete meal.
• Leftovers: Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until warmed through.
• Enhancements: Drizzle with a balsamic glaze or sprinkle with extra Parmesan just before serving for added flavor.