Cheesy Zucchini Casserole Recipe

There's something about a bubbling Cheesy Zucchini Casserole that feels like a warm hug on a plate. The combination of tender zucchini slices, creamy cheese, and a golden breadcrumb topping makes it an irresistible side dish or a light vegetarian main course.

I discovered this gem of a recipe during a bumper zucchini harvest last summer. What started as a way to use up extra veggies quickly became a household favorite, winning over even the pickiest eaters in my family.

Ready to transform simple ingredients into a comforting masterpiece? Let’s dive in!

Why You'll Love This Cheesy Zucchini Casserole

Get ready to add this casserole to your regular rotation. It’s the perfect mix of cheesy indulgence and wholesome goodness.

First, it’s incredibly easy to make. With just a handful of ingredients and minimal prep time, you can have it in the oven in under 15 minutes. Perfect for busy weeknights or lazy weekends.

Second, it’s a great way to sneak in veggies. The creamy cheese and crispy topping make zucchini downright addictive, even for those who normally pass on greens.

Third, it’s versatile and adaptable. Whether you're adding leftover cooked chicken for a heartier meal or swapping cheeses to match your fridge's contents, this recipe fits your needs effortlessly.

Finally, it’s crowd-pleasing and budget-friendly. A dish that feeds the whole family without breaking the bank is always a win in my book. It’s also a guaranteed hit at potlucks or gatherings.

Ingredients Notes

The magic of this Cheesy Zucchini Casserole lies in its simple ingredients. Here's what you’ll need and why they’re essential:

• Zucchini: The star of the dish! Choose medium-sized zucchini with smooth, firm skin. You can also mix in yellow squash for a pop of color. Slice them thinly for even cooking.
• Cheese: A blend of sharp cheddar and mozzarella works beautifully. The cheddar adds depth, while the mozzarella delivers that gooey, stretchy texture we all love. Feel free to experiment with Parmesan, Gruyère, or Monterey Jack.
• Breadcrumbs: For that crispy, golden topping. Panko breadcrumbs are my go-to for extra crunch, but regular breadcrumbs or even crushed crackers will do.
• Heavy Cream: This creates a rich and creamy base. You can substitute half-and-half or even whole milk if you prefer a lighter version.
• Garlic and Onion: These aromatics add a flavor-packed punch. Minced garlic and finely chopped onions or shallots bring depth to the dish.
• Butter: Used to toast the breadcrumbs, ensuring a deliciously crunchy topping that’s hard to resist.

You’ll also need a casserole dish, a sharp knife for slicing, and a skillet for prepping the topping.

How to Make This Cheesy Zucchini Casserole

Creating this casserole is a breeze! Follow these simple steps for a dish that’s both visually stunning and delicious.

Step 1: Prep the Zucchini

Start by slicing 2-3 medium zucchini into thin rounds, about ¼-inch thick. Lay the slices out on paper towels and sprinkle them lightly with salt. This helps draw out excess moisture, preventing a watery casserole. Let them sit for 10 minutes, then pat dry.

Step 2: Make the Creamy Sauce

In a mixing bowl, whisk together ½ cup of heavy cream, 1 cup shredded cheese (cheddar and mozzarella), a pinch of salt, and freshly cracked black pepper. Set aside.

Step 3: Assemble the Casserole

Preheat your oven to 375°F (190°C). Lightly grease a medium-sized casserole dish with butter or cooking spray. Layer the zucchini slices in overlapping rows, then pour the creamy cheese mixture over the top.

Step 4: Prepare the Topping

In a small skillet, melt 2 tablespoons of butter over medium heat. Stir in ½ cup of breadcrumbs and toast until golden brown. Sprinkle the toasted breadcrumbs evenly over the casserole.

Step 5: Bake to Perfection

Place the casserole in the oven and bake for 25-30 minutes, or until the top is golden and bubbly. Let it cool slightly before serving to allow the flavors to meld together.

The result? A cheesy, creamy casserole with just the right amount of crunch and a perfectly tender zucchini base.

Storage Options

If you’re lucky enough to have leftovers, here’s how to store them:

• Refrigerator: Store in an airtight container for up to 3 days.
• Freezer: For longer storage, freeze individual portions in freezer-safe containers for up to 2 months. Note that the texture of the zucchini may soften upon thawing.

To reheat, place the casserole in a 350°F oven for 10-15 minutes, or until warmed through. For smaller portions, the microwave works just fine.

Variations and Substitutions

One of the best things about this recipe is its versatility. Here are a few ways to customize it:

• Add Protein: Mix in cooked shredded chicken, crumbled bacon, or browned sausage for a heartier casserole.
• Switch Up the Veggies: Replace some of the zucchini with sliced mushrooms, spinach, or even thinly sliced potatoes.
• Experiment with Cheese: Swap the cheddar for Gruyère or add a sprinkle of Parmesan to the breadcrumb topping for extra flavor.
• Make it Gluten-Free: Use gluten-free breadcrumbs or omit the topping altogether for a low-carb version.

Don’t be afraid to get creative! This recipe is a blank canvas for your culinary experiments.

Final Thoughts

This Cheesy Zucchini Casserole is proof that simple ingredients can create something extraordinary. Whether you're serving it alongside roasted chicken, as a holiday side, or enjoying it on its own, this dish never disappoints.

Give it a try, and let me know how it turns out. I’d love to hear about any tweaks or additions you make to make it your own! Happy cooking!

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