Sheet Pan Squash Casserole is a delicious and easy dish that combines fresh summer squash with rich cheeses and a buttery cracker topping. This comforting meal is perfect for family gatherings or weeknight dinners, offering a delightful blend of flavors and textures that will make everyone come back for seconds. With its simple preparation and wholesome ingredients, this recipe is not only satisfying but also a fantastic way to enjoy the bounty of summer. Let’s dive into how to make this amazing casserole!

Why You’ll Love This Sheet Pan Squash Casserole

There are countless reasons to adore this squash casserole. First, it’s incredibly easy to prepare, making it a go-to option for busy weeknights. Second, the use of a sheet pan allows for even cooking and easy cleanup. Third, it’s a versatile dish that can be served as a main course or a delicious side. Additionally, this healthy sheet pan casserole is vegetarian, making it suitable for various diets. With layers of cheesy goodness and a crunchy topping, it becomes a family favorite in no time. Finally, it can accommodate gluten-free options, ensuring everyone can enjoy this hearty meal.

Ingredients for Sheet Pan Squash Casserole

Gather these items:

2 lbs summer squash, sliced 1/4-inch thick
5 cups water
1/2 medium yellow onion, chopped
1 3/4 teaspoons salt, divided
1 sleeve butter crackers
4 1/2 cups Cheddar cheese, grated and divided
2/3 cup sour cream
2/3 cup mayonnaise
1/4 cup heavy whipping cream
1/2 teaspoon garlic powder
1/4 teaspoon black pepper
2 large eggs, beaten
1 cup butter crackers, crushed
1 tablespoon unsalted butter, melted

How to Make Sheet Pan Squash Casserole Step-by-Step

Step 1: Preheat oven to 350°F and spray a 10×15-inch rimmed baking sheet with nonstick spray.
Step 2: In a large pot or Dutch oven, bring squash, water, onion, and 1 teaspoon of salt to a boil over medium-high heat. Reduce heat and simmer until tender, about 7 minutes. Drain and set aside.
Step 3: Line the bottom of the prepared baking sheet with butter crackers. Top evenly with 3 1/2 cups of Cheddar cheese and bake until melted, about 5 minutes. Remove from oven.
Step 4: In a bowl, whisk together sour cream, mayonnaise, heavy cream, garlic powder, pepper, eggs, and remaining 3/4 teaspoon salt.
Step 5: Spread the squash mixture over the melted cheese, then pour the egg mixture evenly over squash.
Step 6: Top with the remaining 1 cup cheese. Mix crushed crackers with melted butter and sprinkle over the top.
Step 7: Bake until the center is set, about 25 minutes. Let cool for 20 minutes before serving.

Pro Tips for the Perfect Sheet Pan Squash Casserole

Keep these in mind:

Use fresh summer squash for the best flavor.
Let the casserole sit before serving to firm up for a better texture.
For a gluten-free option, substitute gluten-free crackers.
Experiment with different cheeses for unique flavors.

Best Ways to Serve Sheet Pan Squash Casserole

This vegetable casserole recipe is perfect on its own, but you can elevate the experience by pairing it with a fresh garden salad or some crusty bread. It also works as a side dish for grilled chicken or fish, making it a versatile option for any meal. For a fun twist, serve it with a dollop of salsa or a sprinkle of fresh herbs.

How to Store and Reheat Sheet Pan Squash Casserole

To store any leftovers, let the casserole cool completely and then cover it tightly with plastic wrap or aluminum foil. It can be refrigerated for up to 4 days. When ready to eat again, simply reheat in the oven at 350°F for about 15-20 minutes, or until warmed through. This makes it ideal for meal prep!

Frequently Asked Questions About Sheet Pan Squash Casserole

What is sheet pan squash casserole?

This simple squash casserole recipe combines summer squash, cheeses, creamy ingredients, and a crunchy cracker topping baked in a single pan for easy serving.

Can I make sheet pan squash casserole ahead of time?

Yes, you can prepare the casserole the night before and store it in the fridge. Just pop it in the oven when you’re ready to bake for a quick dinner.

How do I avoid common mistakes with sheet pan squash casserole?

Make sure to drain the squash well after cooking to avoid a watery texture. Also, allow the casserole to cool before serving to let it set properly.

Variations of Sheet Pan Squash Casserole You Can Try

Feel free to experiment with this recipe! You can add other vegetables like zucchini or bell peppers for a colorful sheet pan veggie bake. For a more protein-packed dish, consider adding cooked chicken or turkey. If you’re looking for a lighter version, try substituting Greek yogurt for sour cream and mayonnaise. These variations can keep your dinners exciting while maintaining the deliciousness of this comfort food casserole recipe.