Zucchini Pizza Casserole is cheesy, saucy, and delicious - a meal that the whole family will love! It is low in carbohydrate and is gluten-free.

If you have an overabundance of zucchini from your garden and are looking for a new recipe, then this one is for you! You will need 4 medium zucchini to make this zucchini pizza casserole recipe. Save your larger zucchini for baking treats such as my Blueberry Zucchini Bread!
The Health Benefits of Zucchini

Okay, can we just talk about zucchini for a minute? I feel as though it doesn't get as much love as it should. 😉 Here are a few fun facts for you-
Zucchini contains only 17 calories and 3 grams of carbohydrate per cup!
The highest levels of antioxidants are found in the zucchini's skin, so do not peel!
Zucchini is rich in both fiber and water, which promote healthy digestion!
You can consume 40% of your RDI for vitamin A in just one cup of zucchini, which can support good eye health!
How to make Zucchini Pizza Casserole
First, preheat oven to 400 degrees.
Grate the zucchini, place it in a colander, and drain out the excess moisture with the back of a spoon.
In a mixing bowl, combine the zucchini, eggs, parmesan cheese, black pepper, onion powder, and 1 teaspoon of the Italian seasoning. Press the mixture into a lightly greased 9x13 baking pan and bake for 20 minutes.

Meanwhile, heat the oil in a large skillet over medium heat. Saute the onion and bell pepper until soft and the onion is translucent. Add the garlic and cook for another minute.
Add the ground turkey and cook thoroughly. Stir in the marinara sauce and 1 teaspoon of the Italian seasoning.
Remove the zucchini crust from the oven and spread the sauce mixture evenly on top.

Then sprinkle on the mozzarella cheese, as well as the remaining 1 teaspoon of Italian seasoning. Bake for an additional 20 minutes.

Enjoy!
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Zucchini Pizza Casserole | Low-Carb & Gluten-Free
Equipment
- Mixing Bowl
- 9x13 Baking Dish
- Large Skillet
Ingredients
- 4 medium Zucchini
- 1 Bell Pepper chopped
- 1 Yellow Onion chopped
- 4 cloves Garlic minced
- 1 Tablespoon Olive Oil
- 2 Eggs
- 1 lb. Turkey ground
- 2 cups Marinara Sauce
- 2 cups Mozzarella Cheese shredded
- ¼ cup Parmesan Cheese grated
- 1 Tablespoon Italian Seasoning divided
- ½ teaspoon Black Pepper
- ½ teaspoon Onion Powder
Instructions
- Preheat oven to 400 degrees.
- Grate the zucchini, place it in a colander, and drain the excess moisture with the back of a spoon.
- In a mixing bowl, combine the zucchini, eggs, parmesan cheese, black pepper, onion powder, and 1 teaspoon of the Italian seasoning.
- Press the mixture into a lightly greased 9x13 baking pan and bake for 20 minutes.
- Meanwhile, heat oil in a large skillet over medium heat. Saute the onion and bell pepper until soft and the onion is translucent.
- Add the garlic and cook for another minute.
- Add the ground turkey and cook thoroughly. Stir in the marinara sauce and 1 teaspoon of the Italian seasoning.
- Remove the zucchini crust from the oven and spread the sauce mixture evenly on top.
- Sprinkle on the mozzarella cheese and the remaining 1 teaspoon of Italian seasoning. Bake for an additional 20 minutes.
Notes
- Four medium zucchini will produce 4 cups of grated zucchini (firmly pack in the measuring cup).
- I choose to use a red bell pepper because it contains more beta carotene and vitamin C than a green bell pepper.
Such a great way to cook zucchini. Everyone in my family loves it, and I already got a request to make it again soon. 🙂
So happy to hear this Anita! Thank you. 🙂
This looks so delicious and making my mouth water! Can't wait to make this!
You are going to love it Beth!
You will love it, it really is delicious!
Such a great way to enjoy some extra vegetables in a meal and make them taste delicious!
So true, Alexandra! Healthy AND delicious!
You had me at pizza! The fact that this is made with zucchini instead of pasta noodles has won me over 🤩 Thanks for sharing!
You bet, Traci! I hope you love as much as we do!! 🙂
looking forward to trying this recipe, it sound delicious and healthy.
This recipe for Zucchini Pizza Casserole is so delicious! Made it today and served it for dinner. Huge hit! Will definitely make it again and again!
Yeay! So glad you enjoyed it. 😊
Can you freeze leftovers ?
Yes, absolutely! Store in an airtight container in the freezer for up to 2 months just as you would a lasagna. 😊
Temp and time to reheat from frozen?
You'll want to defrost in your refrigerator first. Then you can heat in a 350 degree oven for 30 minutes or until bubbly. Or reheat individual servings in the microwave on high for 2 minutes. Enjoy!
I thought the crust was a little too soft so the next time I baked longer and it helped firm it up👍
Great recipe! Thank you for posting and sharing!
Glad you enjoyed it!
Love this recipe. I have made it twice, added mushrooms & pepperoni on top.My family loved it. Zucchini is a staple in my house,
Glad you loved it, Tammy! 🙂
Why is there so much cholesterol my husband has heart issues is it safe for him to eat
Hi Donna, It is recommended to limit your cholesterol intake to less than 300 mg/day. This recipe has less than 1/3 of that. Saturated fat actually increases your cholesterol more so than cholesterol itself, and this recipe also contains about 1/3 of your daily needs as well. This recipe would be fine for him to eat. You could cut the amount of mozzarella in half if desired. Hope that helps!
Loved this casserole. I made it exactly as the recipe was written and will definitely be making it again! Yum!
Thank you so much Sharon! ❤️🙂
Made this with one tweak, subbed out mushrooms for the meat since I was making this for my vegetarian daughter. I didn't tell hubby I was making something with 4 zucchinis in it because I knew he would have his doubts. But guess what? He and everyone enjoyed it! Wonderful way to use the bounty of summer zucchinis and have a nice, healthy dinner. Rounded it out with some yummy garlic bread and it was a lovely dinner! Thanks for sharing. This is a keeper!
Glad you all liked it, Barb! I actually became a vegetarian last year and love that you substituted mushrooms!!
I was going to see if it was possible to use mushrooms instead of ground turkey because I wanted to make it for my son's vegetarian girlfriend. Thank you for sharing your post because now I know I can.
Hope you loved it!
Can't wait to try. Love pizza and love summer squash.
Best of both worlds. 😋 Enjoy!
Really good! I don’t put in comments on Pinterest but this was outstanding. My husband doesn’t like zucchini very much. He ate this and didn’t know he was eating zucchini. Told me it is really good. Thank you for the recipe.
That’s so great, Patty - thanks! 🙂
How many cups is equivalent to 4 zucchini
Four medium zucchini will produce four cups. Enjoy! 🙂
can you make this ahead and cook later/ first time making this
Yes, absolutely!
Absolutely delish!! Used up alot of zucchini!! Made a vegan version also with mushrooms and dairy free mozzarella. Turned out fantastic!! THANK YOU!! Outstanding way to use up ALL that zucchini!
Love this, Debbie! I am now a vegetarian as well. What type of vegan mozzarella do you like to use?
I have made this twice already and it’s delicious. I have changed it slightly by using 2 cups each of zucchini and spaghetti squash and ground beef the second time.
That’s great, Taina! Thanks for sharing!! 🙂
Made this for supper tonight as directed with the exception of throwing in a handful of fresh spinach as another reviewer suggested. It was delicious! I will definitely make this again!
I'm loving the spinach idea! Glad you enjoyed it!!
Wish there was an easy way to grate zucchini. Guess I need a food processor. Suggestions? Mine is in the oven!
Yeah, a food processor is definitely a game changer! Literally only takes seconds to grate.
LOVE this! I wonder if I could substitute other kinds of squash?
You could definitely sub a yellow summer squash.
Can’t wait To try this. Have to watch my carbs so this would make a great dinner.
Hi- I am wondering if this can be made ahead w/o baking, or should I bake, refrigerate and then reheat? Thank you.
I'd bake, refrigerate, and reheat!
Hi, I’m wondering if this freezes well? Tons of zucchini and I’d like to make and freeze for my elderly neighbor.
Yes, absolutely!
I made this tonight for the first time and the flavours are delicious. The only thing I don’t understand is why it’s called pizza?? Mine turned out more like a lasagna. Was the crust supposed to harden up?
Yes, it should be firm, You really have to squeeze all that water out of the zucchini. 🙂
This was amazing!!! I made it with hamburger and added baby Bella mushrooms. It was very delicious! I will make it again.
Glad you loved it, Julie!
The whole family loved this and will be making again soon.
That's great to hear, Lisa! Thanks for sharing.
Loved this, next time I’m going to cook the crust a little longer. I thought it was too soft but great otherwise.
Delicious! I made this last night to bring to 2 male co-workers for their meal-prep lunches. They are trying to eat healthier and practice portion control. They both loved it! I used my homemade No Sugar Added Marinara sauce and ground chicken breast. Definitely be adding to my meal prep rotation. Thank you for sharing your recipes!
Fantastic! Glad you enjoyed.
This casserole was so good! Let the cheese brown on top and oh, so good! Lots of spices give it a great taste!
It's definitely a fan favorite! Glad you enjoyed.
This is delicious so happy to find a low carb recipe that’s actually delicious
Absolutely loved it
That's wonderful, Rhonda! Thanks for sharing. 🙂
Just delicious! What a great way to use my zucchini from the garden. I will definitely make it again.
Thanks for sharing, Julia!
This was a great dish! I’m a little heavy on spices but both the crust and the toppings were delicious!
I made this for dinner and it was a hit. Definitely adding it to my favorites. I love that it’s low carb and gluten free. I am gluten free so it was perfect. My husband really liked it too. I substituted ground Italian sausage for the turkey so that added a lot of flavor. I also rinsed the browned meat mixture under hot water (as I always do) to remove some of the fat and patted dry with paper towels.
Glad you enjoyed it, Cindy!
This was delish..., made mine with ground pork.
Glad you like it Ms.Q! Thanks for sharing.
Love this recipe!! Always looking for low carb healthy recipes!
Just eating and WOW YUM! I did substitute Italian sausage for turkey, added fresh mushrooms to the longer simmered sauce, and topped with a few pepperoni slices. I thought for sure I would miss the crust, but not even a little. What looked like a good recipe was better than could ever be expected. Thank you!
Yeay, so glad you enjoyed it!
I made this ! My husband got a ***t load of zucchini’s on sale at Woidman’sI was able to use my canned tomatoes in place of Marinara( all you do is add a little tomato juice or paste if you have it , a squirt of ketchup & corn starch. Make every thing with what you have.. I used up slot of cheeses I had ! Great recipe! I used lean ground beef & Extra herbs.
It sure is a great way to use up all that zucchini!
My whole family loved this recipe, although they call it zucchini lasagne. Definitely a hit and they have asked for it again and again.
Thanks for sharing, Becki!
What adjustment should I make if using frozen zucchini? Or is that not advisable?
What adjustments would you suggest if using frozen zucchini? Or isn’t that advisable?
Great question! I'd think frozen zucchini would have a higher water content which may make the crust too mushy.
Turned out amazing!! And super filling too 🥰 I made this for dinner and everyone loved it
That's great, Christina! Thanks for sharing.🙂
I made this tonight, and it was delicious! I will definitely make it again,
Glad you loved it!
This recipe is fabulous! Easy to make, so tasty AND delicious. I shared pieces with friends and got rave reviews! I’ll be making this again (& again)-saved as a favourite. Thank you!!
That's wonderful! Thanks for sharing!!