Keto Zucchini Casserole Recipe | Easy Cheesy Low Carb

Published: May 2, 2024 by Taryn

Keto Zucchini Casserole is a low carb recipe that the entire family will love. Even picky eaters can’t resist zucchini recipes like this! Follow the recipe for the simple steps to make this delicious dish. It’s perfect for a low-carb lifestyle! 

I have to admit that incorporating zucchini into my life is the perfect way to create more low-carb meal options.

Plus, fresh zucchini is normally inexpensive and in abundance during the warmer and summer months of the year, making it the perfect time to gather the rest of the simple ingredients needed to create this yummy dish.

This cheesy zucchini recipe is a delight for taste buds, and honestly, most people have no idea that it’s a low-carb casserole to begin with. Use up that summer zucchini and have the whole family craving another serving. You don’t have to sacrifice your keto diet any longer with this easy zucchini casserole on your radar. 

Be sure to check out my Keto Zucchini Fritters and my Keto Zucchini Bread for other yummy recipes that are low in carbs! Or this Mediterranean-inspired Zucchini Gratin.

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Ingredients

• Zucchini – Thinly sliced zucchini slices are key for the texture of this recipe.
• Shredded cheese – I use Colby Jack but you can use any flavor of cheese that you want.
• Cottage cheese – Adds texture and protein.
• Mayonnaise – For flavor and texture.
• Egg – Helps to bind the ingredients together when baking.
• Garlic powder – Add a hint of garlic flavor.
• Onion powder – Adds onion flavor.
• Salt – Salt enhances all the other flavors. You can add black pepper to if you want.

See recipe card for quantities.

How to Make Keto Zucchini Casserole

Prep: Sprinkle the sliced zucchini with salt and set aside to drain water for 30 minutes. Strain out any water. Since zucchini has a high water content this helps remove some of that water so the sauce in the casserole isn’t too thin.

Preheat the oven to 350 degrees. Add nonstick cooking spray to a baking or casserole dish. 

Substitutions

• Cheese – You can use mozzarella cheese, parmesan cheese, sharp cheddar, Gruyere cheese, Monterey jack, cheddar cheese, or any type of creamy cheese sauce that you want. Any would make a good option. 
• Zucchini noodles – Try this simple recipe using zoodles instead of sliced zucchini. 

Variations

Keep in mind that while variations are good, they do change the carb and calorie count of this recipe.

• Add sour cream – Adding sour cream or a little bit of cream cheese to the mixture is a simple way to add flavor and texture. 
• Ground beef – You can easily add other recipe ingredients, like meat, to this dish. This just might be the best way to make a hearty casserole that can feed a larger crowd.

See this Keto Green Bean Casserole for a fun new recipe to try!

Equipment

I like to have a 9×13-inch casserole dish for this recipe and a mandoline slicer. 

Storage

This recipe can be a simple side dish or a main entree, so storing leftovers is key to enjoying the flavors again. Let the casserole cool to room temperature, and then store leftovers in an airtight container. 

Keep the leftovers covered and in the fridge. Eat within 2-3 days. Keep in mind that there might be excess water that comes from the zucchini, depending on how much water it retained. You can drain this off, or just be sure to use a slotted spoon when scooping and serving leftovers. 

Reheat leftovers in the oven or microwave. 

Due to the added zucchini, I don’t recommend freezing this dish. Fresh is best.

Common Questions

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