This cheesy zucchini casserole is creamy, cozy, and so easy to make. It’s made with layers of fresh zucchini baked in a light cream sauce, melted mozzarella, and a crispy panko topping. The perfect zucchini gratin to serve as a side or a simple family dinner everyone will love.

Why you’ll love this recipe

Creamy and cheesy texture – A mix of cream and mozzarella gives this zucchini bake the perfect balance between creamy and melty, without being too heavy.
Crispy golden topping – The panko breadcrumbs turn perfectly golden in the oven, adding that irresistible crunch to every bite.
Simple and family-friendly – Just a few everyday ingredients and minimal prep for a comforting zucchini casserole that fits into any weeknight dinner.eeks.

Ingredients for Zucchini casserole with cheese

Zucchini – Fresh and firm, thinly sliced so they cook evenly.
Heavy cream – You can use crème fraîche, sour cream, or a mix of milk and cream for a lighter version.
Mozzarella cheese – Melts beautifully, but you can mix it with Parmesan or cheddar for extra flavor.
Panko breadcrumbs – For that crispy topping. Regular breadcrumbs or crushed crackers work too.
Olive oil – Or melted butter for a richer taste.
Salt, pepper and herbs – Season with salt, pepper, and your favorite spices like thyme, oregano, or Herbes de Provence.
Fresh garlic – Finely chopped or pressed for a subtle, aromatic flavor.

How to Make Cheezy Zucchini Casserole

Wash and slice the zucchini into thin rounds. Arrange them in a baking dish, sprinkle with salt, and let them sit for a few minutes to release some water.

In a bowl, mix the heavy cream with the chopped garlic, a little olive oil, pepper, and herbs. Add half of the shredded mozzarella and stir until combined.

Pour the creamy mixture over the zucchini and toss lightly to coat. Add the rest of the mozzarella on top, then sprinkle the panko breadcrumbs and drizzle with a bit of olive oil.

Bake your cheesy zucchini casserole in a preheated oven at 180°C / 350°F for about 30–35 minutes, until the top is golden and crispy.

What to serve with it

Grilled chicken or roasted meat – The creamy zucchini pairs perfectly with juicy, seasoned meat.
Baked salmon or white fish – A light and balanced meal idea for summer dinners.
Green salad – To keep it fresh and simple.
Rice or quinoa – Great if you want a more filling side.
Crusty bread – Perfect to soak up the creamy sauce.

Tips for this recipe

Slice the zucchini thinly – It helps them cook faster and stay tender without releasing too much water.
Let the zucchini rest with salt – A few minutes is enough to draw out excess moisture and keep your casserole creamy, not watery.
Use a mix of cheeses – Combining mozzarella with Parmesan or cheddar gives the best flavor and texture.

Recipe variations

Add other veggies – Mix in sliced tomatoes, onions, or bell peppers for extra color and flavor.
Make it lighter – Use milk instead of cream or skip the breadcrumbs for a healthier zucchini bake.
Add protein – Stir in cooked chicken or diced ham for a complete meal.
Try different cheeses – Swap mozzarella for Gruyère, cheddar, or goat cheese.

Recipe Questions

Can I make this ahead of time?

Yes! You can prepare it a few hours in advance and keep it covered in the fridge. Bake it just before serving.

How do I store leftovers?

Let the casserole cool completely, then cover and refrigerate for up to 3 days. Reheat in the oven or microwave.

Can I freeze it?

Yes, but it’s best fresh. If you freeze it, bake first, let it cool, and store in an airtight container for up to 2 months.