This easy zucchini casserole is a hearty, cheesy, and comforting family dinner made with fresh zucchini, a bread crumb topping and plenty of gooey cheese. A quick and easy zucchini casserole recipe that’s perfect for using up fresh summer zucchini!
Garden zucchini coming out your ears? This zucchini casserole turns a whopping 9 cups of shredded zucchini into one seriously delicious side dish. Garlic, herbs and 3 different cheeses bring the flavor, while a buttery panko topping adds that golden CRUNCH we all know is the best part.
And don’t worry—we’ve got a simple trick for getting rid of all that extra zucchini moisture so you don’t end up with a puddle at the bottom of your casserole.
I planted ONE zucchini plant this year. One. I thought I was being smart because zucchini plants are notorious for producing more squash than any human could possibly eat. Well, I picked 10 zucchini and there were still 21—yes, TWENTY-ONE—on the dang plant! What?!
Clearly, I needed a recipe that could put a serious dent in my zucchini situation, and this casserole was the winner!
It’s an easy vegetable side dish for Sunday dinner, summer BBQs or potlucks—and apparently the answer to one wildly overachieving zucchini plant.
Why You’ll Love This Zucchini Casserole
- Uses a TON of zucchini: 9 cups of shredded zucchini disappear into one delicious casserole. Hello, summer garden!
- Creamy + crunchy: The tender, cheesy zucchini filling gets topped with buttery panko for the best contrast in texture.
- BIG flavor: Zucchini can be a little blah on its own, so we’re bringing in sautéed onion and garlic, oregano, thyme, basil and paprika. No boring veggies here!
- No soggy casserole: Salting and draining the shredded zucchini first removes excess moisture so you don’t end up with zucchini soup.
- THREE kinds of cheese: Parmesan goes into the casserole while cheddar and mozzarella create that irresistible cheesy top.
- Easy side dish: It’s simple enough for a weeknight but totally at home alongside a Sunday roast or on a holiday table.
Ingredients You’ll Need
- Shredded Zucchini: You’ll need about 2 ½ pounds, or 9 cups once shredded. Don’t peel it! The skin is tender and adds color.
- Onion + Garlic: Sautéing them first takes away the raw bite and adds so much more flavor to the casserole.
- Eggs + Sour Cream: These bind everything together and give the filling its creamy texture.
- Dijon Mustard: Just a teaspoon adds a little tang and depth without mak