Zucchini Casserole with Cheese is kinda my go-to when I’ve literally got zero patience for fancy meals but want something that tastes like a five-star restaurant (yep, I said it). You know when there’s a pile of zucchini taking over your counter and you just, well, can’t make another stir fry? Been there. Plus, who doesn’t secretly hope for an excuse to load up on cheese after a long day? Check out my all-time favorite spin on zucchini below, and oh—if you’re a zucchini superfan, you might also like this zucchini garlic grilled cheese delight or if you’re hunting for a sweet treat, peek at these delicious pumpkin cookies with cream cheese frosting. Alright, let’s get cheesy.

Ingredients You’ll Need
Let me just say: the ingredients for delicious zucchini casserole with cheese are easy to find and not intimidating at all (like, you won’t have to mail order anything fancy). You’ll want:
- 3 to 4 medium zucchini, sliced (not paper-thin or you’ll get mush)
- 1 medium onion, diced (sweet ones are extra tasty here)
- 2 cups shredded cheese (cheddar is classic, but go wild if you want)
- 2 eggs, lightly beaten (will make everything hold together)
- 1/2 cup milk (use whatever you’ve got in the fridge—nobody’s judging)
- 1 cup breadcrumbs (the buttery kind is extra tasty)
- 2 to 3 garlic cloves, minced
- 1/2 teaspoon salt, more if your cheese is mild
- Pepper (do it to taste, I usually add a good pinch)
- Optional: fresh herbs like parsley, or throw in a bit of basil if you have any dying on the windowsill
I promise, that’s it. No tricks, just solid basics.

How to Make Cheesy Zucchini Casserole with Step-by-Step Instructions
Okay, here we go. Get your oven going to 375°F so it’s hot and ready. First thing? Sauté your onion and zucchini in a splash of oil (3-4 minutes, tops). You want them softened, not brown.
Alright, grab a big bowl. Mix together your sautéed veggies, half the cheese, eggs, milk, garlic, salt, and pepper. Pour this glorious mess into a greased baking dish, spread it out, and go ahead, dump on the rest of the cheese. Sprinkle with breadcrumbs.
Pop the whole thing in the oven for about 30 minutes. It should come out bubbly and golden on top (seriously, let it cool five minutes or you’ll burn your tongue like I ALWAYS do). Simple, huh? And it smells like heaven.

Recipe Notes and Expert Tips
This isn’t rocket science, but I’ll drop some nuggets of wisdom anyway. If your zucchini is watery (some of those big garden ones just are), salt the slices and let them rest on a towel for fifteen minutes while you prep other stuff. Pat ‘em dry before you toss them in your mix.
About the cheese—yes, pre-shredded is lazy-friendly, but grating from the block gives you that gooey melt. If you want to add cooked chicken or ground turkey, it’s honestly a great way to sneak in more protein. Oh, and if the top starts browning before the middle sets, just loosely cover with foil.
I brought this to my family’s Sunday potluck, and even my super-picky cousin kept going back for seconds. The cheese pull was INSANE. Trust me, make extra!
How to Store Leftover Zucchini Casserole
Here’s where my leftover-loving heart gets all happy. Got extras? Lucky you.
Stick your delicious zucchini casserole with cheese in an airtight container (glass, plastic, whatever—just get a good seal). It’ll chill in the fridge for about 3-4 days, no problem. I honestly think it tastes even better the next day, after the flavors cozy up together.
For reheating, just pop a slice in the microwave for a minute or two. If you want it crispy (and who could blame you) throw it back in the oven at 350°F until hot throughout. Oh—freezer advice? You can freeze slices, but let’s be real: the texture after reheating is a bit mushier. I recommend eating it fresh, or within a couple days.
Why This Recipe Works
Want the simple truth? It’s all about balance. The creamy, cheesy layers mixed with tender zucchini—pure comfort food. No one at my table cares that it’s loaded with veggies when there’s so much flavor.
Let’s be honest, anything with a golden cheese top gets devoured, but this one somehow manages to not feel heavy. Also, it’s flexible. You can sneak extra veggies in (carrots, spinach, even some peppers if that’s your jam), or keep it basic for picky eaters.
Plus, it’s cheap. I mean, garden zucchini is basically free if you know someone with a wild plant—or you’ll find it so cheap at farmer’s markets you’ll be shocked. You can even serve it with things like this summer corn salad with avocado if you’re craving more freshness. Or, honestly, try it next to a big bowl of easy turkey zucchini casserole for a true feast.
Serving Suggestions
- Serve as a main dish with a simple salad (you’ll feel like a health guru, promise)
- Add to a brunch spread—amazing next to scrambled eggs
- Pack up leftovers for an easy lunch (no regrets, it’s tasty cold or hot)
- Pair with fresh bread for a super filling meal
Common Questions
Q: Can I use yellow squash instead of zucchini?
Yep, go right ahead. Mix them for more color.
Q: Is it gluten-free?
If you use gluten-free breadcrumbs, sure!
Q: Can I prep this ahead?
Totally—just assemble, cover, and refrigerate it. Bake it when you want, maybe a few minutes longer if it’s cold.
Q: Why is my casserole watery?
Zucchini holds lots of water, so salt/dry it before baking. Or don’t sweat it (pun intended)—it’s still tasty.
Q: Which cheese is best?
Sharp cheddar is classic, but mozzarella makes it gooey, and a bit of parm on top is chef’s kiss.
Wrap-Up: Try This Cheesy Comfort Tonight!
Honestly, delicious zucchini casserole with cheese should just be your answer to any dinner rut. It’s veggie-packed, super cheesy, and happy-food for both busy weeknights and lazy Sundays. For more veggie-packed goodness, check out this cheesy zucchini casserole recipe (easy to make) or the Easy Cheesy Zucchini Casserole – My Farmhouse Table when you’re ready for a little adventure in your kitchen. You never know, you might start craving zucchini all over again. Go on—get that oven cranking, grab your zucchinis, and treat yourself.


Cheesy Zucchini Casserole
Ingredients
Method
- Preheat your oven to 375°F.
- Sauté the onion and zucchini in a splash of oil for 3-4 minutes until softened, but not browned.
- In a large bowl, mix together the sautéed veggies, half of the cheese, eggs, milk, garlic, salt, and pepper.
- Pour the mixture into a greased baking dish, spread it out, and top with the remaining cheese and breadcrumbs.
- Bake in the preheated oven for about 30 minutes, or until bubbly and golden on top.
- Let it cool for five minutes before serving to avoid burns.