Cheesy zucchini gratin

 Fresh Cheesy Zucchini Gratin

This Fresh Cheesy Zucchini Gratin is a deliciously creamy side dish featuring tender fresh zucchini, plenty of melted cheese, and a golden baked topping. It is an easy way to turn seasonal zucchini into a comforting dish that works beautifully alongside almost any main course.

With its creamy center and lightly crisp, cheesy top, this zucchini gratin is perfect for family dinners, Sunday suppers, holiday meals, potlucks, and summer gatherings.

Ingredients

• 4 medium fresh zucchini, thinly sliced
• 2 cups shredded cheddar cheese
• ½ cup grated Parmesan cheese
• 1 cup heavy cream
• 2 tablespoons butter
• 2 cloves garlic, minced
• ½ teaspoon salt
• ½ teaspoon black pepper
• ½ teaspoon Italian seasoning
• ½ cup breadcrumbs

How to Make Fresh Cheesy Zucchini Gratin

1. Prepare the Zucchini

Preheat your oven to 375°F (190°C).

Wash the zucchini and slice it into thin, even rounds. Pat the slices dry with paper towels to remove excess moisture.

This step is important because zucchini naturally contains a lot of water, which can make a gratin watery.

2. Make the Creamy Mixture

Melt the butter in a small saucepan over medium-low heat. Add the minced garlic and cook for about 30 seconds, just until fragrant.

Pour in the heavy cream and season with salt, black pepper, and Italian seasoning. Warm gently without bringing it to a rapid boil.

3. Layer the Gratin

Lightly grease a baking dish.

Arrange a layer of zucchini slices across the bottom. Sprinkle with some cheddar and Parmesan cheese.

Continue layering the zucchini and cheese until everything is used.

Pour the warm cream mixture evenly over the zucchini.

4. Add the Topping

Sprinkle the breadcrumbs over the top, followed by the remaining Parmesan cheese.

The breadcrumbs help create a golden, lightly crisp topping while the cheese melts underneath.

5. Bake

Cover the dish loosely with aluminum foil and bake for approximately 25 minutes.

Remove the foil and continue baking for another 15–20 minutes, or until the zucchini is tender and the top is golden and bubbling.

For an extra golden finish, you can broil the gratin briefly at the end. Watch it closely so the cheese does not burn.

6. Rest and Serve

Allow the gratin to rest for about 5–10 minutes before serving.

This gives the creamy sauce time to settle and makes the casserole easier to portion.

Tips for the Best Zucchini Gratin

Choose fresh, firm zucchini that are similar in size so the slices cook evenly.

Do not slice the zucchini too thick. Thin slices become tender while still maintaining enough texture.

Patting the zucchini dry before assembling the casserole helps prevent excess liquid.

Freshly shredded cheese melts especially well and gives the gratin a smooth, creamy texture.

What to Serve With Zucchini Gratin

This cheesy zucchini dish pairs wonderfully with roasted chicken, grilled steak, pork chops, baked chicken, roasted turkey, or grilled fish.

It also works beautifully alongside mashed potatoes, rice, or a fresh green salad for a complete family dinner.

How to Store Leftovers

Allow leftover zucchini gratin to cool before transferring it to an airtight container.

Refrigerate for up to 3–4 days.

Reheat in a covered oven-safe dish at 350°F (175°C) until warmed through. Individual portions can also be reheated in the microwave.

For the crispiest topping, reheating in the oven is recommended.

Frequently Asked Questions

Can I use yellow squash?

Yes. Yellow squash can replace some or all of the zucchini and works very well in this gratin.

Can I use a different cheese?

Absolutely. Mozzarella, Monterey Jack, Gruyère, or Colby can be combined with the cheddar for different flavors.

How do I prevent watery zucchini gratin?

Slice the zucchini thinly, pat it dry, and avoid adding excessive liquid. Allowing the finished gratin to rest before serving also helps.

Can I prepare it ahead of time?

Yes. Assemble the gratin several hours ahead, cover it, and refrigerate. Add a few extra minutes to the baking time if it goes directly from the refrigerator into the oven.

Final Thoughts

This Fresh Cheesy Zucchini Gratin is an easy and comforting way to enjoy fresh zucchini. Tender vegetables are layered with cheddar and Parmesan, surrounded by a creamy garlic sauce, and finished with a golden cheesy topping. It is simple enough for a weeknight dinner yet delicious enough for a holiday table or family gathering.