This Keto Zucchini Casserole is cheesy, buttery, and packed with low carb zucchini!
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If you’re looking for a tasty casserole featuring zucchini, try this one! This garlic parmesan casserole has a cheesy, comforting inside with a crispy, delicious topping and is a total must-make. (Not a huge garlic fan? No worries – I’ve got you covered with modifications!)
Why You’ll Love This Keto Zucchini Casserole
- It’s a veggie-heavy dish that can be served as a keto side dish or modified into a full meal. Serve this recipe as is for a filling side dish, or add cooked cubed or shredded chicken to make it into a full meal.
- It’s a great way to get through extra zucchini. Have a bumper crop of zucchini from your garden, or maybe it was on sale at the store? This recipe uses four medium zucchini!
- You can’t go wrong with a cheesy, buttery flavor! 🧀🧈
Ingredients Needed to Make This Zucchini Casserole Keto-Friendly
Ingredient quantities for this homemade zucchini casserole are located in the recipe card at the end of the post.
- Zucchini
- Yellow onion
- Garlic
- Eggs
- Shredded mozzarella cheese
- Shredded cheddar cheese
- Grated Parmesan cheese
- Pork rinds or Parmesan cheese crisps
- Butter
- Salt
❌🧄 Not a big garlic fan? Feel free to modify or omit the amount of garlic used in this recipe. Sometimes I make this recipe without the garlic and instead use 2-3 tsp Italian seasoning.
🍽 Want to make this a full meal? Add cooked cubed or shredded chicken breast.
How to Make Keto Garlic Parmesan Zucchini Casserole {Quick Overview}
This is just a quick overview of some of the steps involved in making the low carb zucchini casserole. For the recipe in detail, including exact measurements used at each step, scroll to the recipe card at the end of the post.
To start this casserole, you’ll need to remove some of the water from the shredded zucchini.
⭐ If you don’t want to shred your own zucchini, you can use fresh spiralized zucchini found in the produce section. Just make sure to chop it into shorter pieces so you’re not using long spirals.
Start by adding half of the zucchini to the middle of a cheesecloth or cotton kitchen towel. (Photo 1)
Twist the cloth or towel to make a pouch. (Photo 2)
Over a bowl or a sink, squeeze the pouch as much as possible to extract excess water. (Photo 3)
Add the zucchini to a dry bowl, then repeat the process for the other half of the zucchini. Add the remaining zucchini to the bowl. (Photo 4)
To the zucchini, add onion, garlic, eggs, mozzarella cheese, cheddar cheese, and 1/2 cup Parmesan cheese. (Photo 5)
Add mixture to a prepared baking dish and bake per the recipe card at the end of the post. (Photo 6)
While the dish is baking, melt butter. In a small bowl, combine melted butter, pork rinds, and remaining Parmesan cheese.
Remove dish from oven after 20 minutes. (Photo 7)
Add butter mixture on top and return to oven for 5-8 minutes, until the topping is browned and crispy. (Photo 8)
Serve. Season with salt and pepper to taste and enjoy!
More Zucchini and Squash Recipes
- Make this amazing chicken and zucchini casserole for holidays, family events, and regular dinners. Your guests won’t even notice they are eating a healthy dinner food!
- Baked zucchini and squash is a must-make keto side dish that always delivers.
- Make roasted vegetables for any event like Thanksgiving, July 4th, and as a football party food!
- Try this easy chicken and vegetable sheet pan recipe that will satisfy the whole crew. This dish is bursting with flavor and is certain to satisfy everyone you’re feeding!
Nutrition Facts for This Easy Healthy Zucchini Casserole
Per serving (6 total servings):
- 267 calories
- 19g fat
- 16g protein
- 7g net carbs
More Healthy Vegetable Side Dishes
- Cauliflower macaroni and cheese is a delicious side dish that everyone will enjoy!
- An antipasto salad and cucumber ranch salad are always excellent options for refreshing side dishes.
- This mega-popular broccoli salad is always the first side dish to run out at parties and gatherings! And while we’re talking broccoli, don’t miss out on this easy roasted carrots and broccoli recipe. It’s got that perfect balance of savory and sweet that everyone loves!
- Keto fries are an exciting option when you’re looking for something new to make. This recipe uses a secret vegetable to capture that delicious french fry flavor!
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Keto Zucchini Casserole
Ingredients
- 4 cups shredded zucchini about 4 medium zucchini
- 1/4 tsp salt
- 1/2 cup diced yellow onion
- 2 tbsp minced garlic
- 2 eggs beaten
- 1 cup shredded mozzarella cheese
- 1/2 cup shredded cheddar cheese
- 3/4 cup grated Parmesan cheese divided
- 1/2 cup crushed pork rinds or Parmesan cheese crisps
- 3 tbsp butter
Instructions
- Preheat oven to 375 F and prepare an 8” x 8” baking dish by spraying it with non-stick cooking spray.
- Place half the shredded zucchini in the center of a clean cheesecloth or cotton kitchen towel. Twist the cloth or towel to make a zucchini “pouch.” Over the sink, squeeze the pouch to extract as much water as possible from the shredded zucchini.
- Add the drained zucchini to a bowl, then repeat the process for the second half of the zucchini.
- To the zucchini, add onion, garlic, eggs, mozzarella cheese, cheddar cheese, and 1/2 cup Parmesan cheese. Mix well.
- Add mixture to prepared baking dish and bake for 20 minutes.
- While the dish is baking, melt butter. To a small bowl, add pork rinds, remaining 1/4 cup Parmesan cheese, and melted butter. Stir to combine.
- After 20 minutes, remove dish from oven and sprinkle buttered mixture on top. Then return to the oven for an additional 5-8 minutes, or until topping is browned and crispy.
- Serve and season with salt and pepper to taste.
Notes
- If you don’t want to shred your own zucchini, you can use fresh spiralized zucchini found in the produce section. Just make sure to chop it into shorter pieces so you’re not using long spirals.
- Not a big garlic fan? Feel free to modify or omit the amount of garlic used in this recipe. A modification I make sometimes is omitting the garlic completely and adding 2-3 tsp Italian seasoning.
- Want to make this a full meal? Add cooked cubed or shredded chicken breast.
Nutrition Disclaimer
Nutrition facts are included as a courtesy only. They are accurate to the best of our knowledge based on the ingredients and brands used, but their accuracy is not guaranteed. If applicable, sugar alcohols have already been removed from the total carb count.
On this site, you will find keto, low carb, gluten-free, and healthy recipes that don’t sacrifice flavor. 🍰 Thanks for visiting!
Amazing !Loved it with these changes —…doubled recipe included
4 cups diced yellow squash and 4 cups diced zucchini ..just 2 TBSP Garlic….No onions..No Butter No Pork rinds or Crisps…Added cooked diced chicken.All other ingredients included.Cooked about 1 1/2hrs
If you never try another zucchini recipe, make this one!! I was shocked at how delicious this was. I’m the only one in the family who will eat Keto and normally that makes me me sad. Not this time. It meant more for me. (Isn’t that awful?) It’s good hot or cold. reheats like a dream and tastes the same three days after you make it as the first time. This is a winner for sure.
Diane, thank you SO much for your kind review!! I am so happy to hear that you enjoyed it and that you think the recipe is a winner! 😊🏆