Meatball Casserole
If you are looking for a new family dinner this homemade Meatball Casserole should be it. Juicy, flavorful meatballs baked until golden and then covered with tomato sauce and cheese. My low carb keto Meatball Casserole was a hit with my family and should be a hit with yours.
When I was in college, I was still a vegetarian. One of my favorite meals from the dining hall takeout was a vegetarian Italian meatball parmesan sub. I have no idea what those “meat”balls were made of, and I probably don’t want to know, but it was terrific.
It was smothered in tomato sauce and topped with provolone. I’d look forward to Tuesdays so I could get dining hall take-out and my favorite meatball parmesan sub. Almost fifteen years later, that is the only dining hall food I recall, and that is my inspiration for my cheesy meatball casserole.
This casserole with meatballs was a perfect substitute. I could eat this Italian meatball casserole recipe once a week for the rest of my life and never get sick of it. And my whole family would agree.
Love this? Try my Keto Chicken Parmesan next! Breaded with parmesan cheese, it is lighter than classic chicken parm but just as good!
Ingredients
- Ground Meat – I typically use ground turkey but ground beef, ground pork, or ground chicken work as well.
- Ground Sausage – I use sweet Italian sausage but hot Italian sausage is fine or a combination of the two.
- Egg – The egg is the binder in this in addition to the grated parmesan cheese.
- Shredded Zucchini – You can’t taste it and it gives a lot of moisture to the meatballs.
- Shredded Mozzarella Cheese – You can also use a blend of Italian cheese.
- Keto Marinara Sauce – I like to make my own but any pasta sauce or tomato sauce without added sugar is fine.
- Spices – I prefer to use dried onion, garlic, and basil in these. You can use Italian seasoning in place of the basil if you prefer the flavor of that.
- Salt & Pepper
How to Make a Meatball Casserole
Step One: Put all the ingredients for the meatballs in a large mixing bowl and mix. You can do this by hand or with a rubber spatula.
Step Two: Next, scoop the meatballs. A large cookie scoop makes this very easy. You should end up with 24 meatballs. Bake in a baking dish coated with cooking spray until they are almost completely cooked. I shoot for 150-155 on my meat thermometer.
Step Three: Top with sauce and sprinkle mozzarella cheese on top and finish baking. For the best golden brown cheese on top broil the low carb meatball casserole for 2-3 minutes, watching it carefully.
Top Tip💡
You can make the Italian meatballs ahead of time, cook until fully cooked, and then freeze the cooked meatballs in a freezer bag. Just place the frozen meatballs in the casserole dish, bake until thawed, and then top with the sauce and cheese. This easy prep idea is always a perfect meal on busy weeknights.
Storage
Store any leftovers in an airtight container in the fridge for 3-4 days.
Variations
- Fresh Basil – If you have fresh basil, feel free to mix some into the ground meat mixture, add some to the marinara, or sprinkle on top after baking.
- Spices – Swap the dried minced onion and garlic for onion powder and garlic powder, or sub in Italian seasoning.
This Sausage Parmigiana is also a great choice if you need more dinner recipes! Or for a vegetarian version sub in cauliflower and try my Cauliflower Parmesan.
Common Questions
We enjoy it with a side salad, vegetables, or any of the main low carb pasta options out there, such as palm noodles and zoodles.
Our family’s favorite ways to serve this is on top of zucchini noodles or spaghetti squash. For any non-keto eaters, you can serve with garlic bread or a side of al dente pasta.
Alternatively, you can serve with a side of roasted broccoli or green beans or a green salad.
Yup! Here the meatballs are after forming them. I use a large cookie scoop to simplify the process. Since there is no need to get up to your elbows in raw meat, this is a great task to get the kids involved in. Mine are pros at scooping low carb meatballs by now. Make sure to also check out the video below.
That hidden zucchini in my juicy meatballs is my sneaky mom favorite addition. My kids don’t even notice it’s in there. If you really want to hide it you can peel the green skin off first.
If you would like to substitute another veggie for the zucchini I would recommend chopped spinach.
Absolutely! This easy meatball recipe also freezes really well! Go ahead and make a double batch and then next time you want an easy Meatball Casserole just thaw, dump into the baking dish, and cover with sauce and cheese. Meatball Parmesan in a jiffy!
I love to always have a bag of low carb homemade meatballs in the freezer for nights that I don’t want to cook.
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Video
Meatball Casserole Recipe
Equipment
Ingredients
Meatball Ingredients
- 1 lb ground turkey
- 1 lb Italian sausage
- 1 cup shredded mozzarella
- 1/3 cup grated or shredded parmesan
- 1 medium shredded zucchini about 1 cup
- 1 egg
- 2 tsp dried minced onion
- 2 tsp dried minced garlic
- 2 tsp dried basil
- 1 tsp salt
Casserole Ingredients
- 1 cup marinara sauce
- 8 oz shredded cheese (I used a two cheese pizza blend of mozzarella and provolone)
Instructions
- Preheat oven to 400. Spray a casserole dish with cooking spray
- Combine all the ingredients for the meatballs and mix thoroughly. Make about 24 meatballs and put them in the casserole dish.
- Bake for 30 minutes or until the meatballs are cooked through. Carefully drain the cooking liquid from the casserole dish.
- Top with the sauce and cheese. Bake for an additional 10-15 minutes or until the cheese is melted.
- Optional: I broiled for 3-4 minutes at the end to toast the cheese. Watch it carefully if you put it under the broiler. The cheese can burn easily.
Notes
Nutrition
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Originally Published September 23, 2016. Revised and Republished September 8, 2025.
This is one of my favorite go to meals!
Joy Filled Eats- My go to in learning how to cook and bake Paleo/Keto…I have been cooking for 65 years and needed to change course which changed my life by using coconut flour- low car-high protein… Thank you so much for this site and your grace and wisdom! All the recipes come out—GREAT!
Excellent recipe. Easy to prepare and delicious.
Always a crowd pleaser!
Perfect to freeze in portions for one. Staple in my freezer.
Delicious!! Great way to use zucchini.
Am I squeezing the water out of the shredded zucchini?
No need. It keeps the meatballs moist.
I made these tonight did company and they were fabulous❣️ Thank you for sharing this recipe 🥰
Can I use zucchini from the frozen foods section?
Yes, just thaw it first and drain excess liquid.
Do you have any suggestions about what to use instead of an egg?
You can omit it if needed.
So yummy! It’s been a favorite for years with the family. Kiddos never knew there was zucchini in it.
I don’t know what to say …. amazing, stunning. Soooo good, they just melt in you mouth. Best meatballs ever (in my opinion anyway)
I love this recipe. I have used it many many times. Very easy to make. Tastes wonderful. Great for parties. Can be frozen and reheated. I had lost the recipe for a couple of years, couldn’t remember where I had saved it, then found it on Pinterest. Like finding an old friend. Making it for friendnds this coming weekentd.
these were phenomenal! great flavor and texture, will absolutely make again! I loved that they baked instead of cooked stovetop, much less maintenance.
I will making this soon. Sounds so good!!