Easy Zucchini Casserole – Cheesy, Low Carb and Delicious!
This easy zucchini casserole is easy, cheesy and delicious! I love it because it has only a few ingredients, is quick to put together and the whole family loves it!
This zucchini gratin is a wonderful low carb side dish to any meat or poultry dinner such as this ranch grilled chicken recipe.
It is much better for you than scalloped potatoes but just as tasty. And it’s such a great way to use up all that zucchini squash in the garden!
1/4 of this cheesy zucchini recipe has only 3 net carbs!
I love to use both green and yellow zucchini because it makes the dish look so pretty. The secret is to slice it super thin and the best way to do that is by using a mandoline.
For years I didn’t have a mandoline because I thought they were too expensive but then I found a very inexpensive plastic model and I’ve been using it forever!
It’s super for making any vegetables into nice even thin slices for casseroles or chips. The one I have is no longer on the market but it looks a lot like this mandoline slicer that is a best seller on Amazon.
Is Zucchini Good for the Keto Diet?
There’s a reason zucchini is such a commonly used vegetable on the low carb, Keto diet. At about 3g of net carbs, this squash is perfect to use as a staple in your Keto arsenal.
Zucchini is also a nutrient dense food, has lots of vitamin C, is high in fiber, and has a high water content, which means it will get you the vitamins you need, make you full faster, and you don’t have to hold back when including it in your easy cheesy, low carb zucchini casserole.
Ingredients for Easy Cheesy Zucchini Casserole
(Printable Recipe card is below)
- Zucchini, thinly sliced (I use 1 green and 1 yellow)
- Onion, thinly sliced
- Grated cheese (I used a mix of Monterey Jack and mozzarella in the one pictured below )
- Sour cream
- Heavy cream
- Garlic powder
- salt and pepper to taste
Instructions
- Grease a 9 inch baking pan with butter
- Place overlapping zucchini slices in baking dish, layering it with onions and cheese between each layer
- You can use a round dish or square
- In a small bowl combine sour cream with garlic powder, salt and pepper and just enough cream to thin the mixture.
- Spread sour cream mixture over the zucchini
- Bake at 350 degrees for 35 minutes or until casserole is brown and bubbly on top.
- Let rest in oven for 10 minutes.
Variations: I like to add in some chopped jalapenos to give it a bit of tex mex flavor. You can also change up the cheese and spices to suit what you have on hand.
List of more Keto Zucchini Recipes to try
- Chocolate Zucchini Brownies
- Zucchini Chaffles or Waffles
- Shredded Zucchini Bites
- Zucchini Pizza Boats
Make Tonight a Low Carb Easy Cheesy Zucchini Casserole Night!
This dish is perfect for serving to your family on a regular night, but also works great when you are servings guests. Although it is a low carb Keto dish, it’s still incredibly delicious and who doesn’t love all that cheese? Your guests will love it.
Another great side dish to try is this low carb cauliflower and cheese recipe.
Recipe Card for Easy Zucchini Casserole
Easy Zucchini Casserole - Cheesy, Low Carb, Keto and Delicious!
An easy one pan family and budget friendly dish! Great for vegetarian keto or meatless Monday! Great low carb side dish that even the kids will love!
Ingredients
- 2 zucchini, thinly sliced (I use 1 green and 1 yellow)
- 1 small onion, thinly sliced
- 1 cup grated cheese (I used a mix of Monterey Jack and mozzarella in the one pictured right )
- 1/2 cup sour cream
- 1-2 tbsp cream
- 1 teaspoon garlic powder
- salt and pepper to taste
Instructions
- Grease a 9 inch baking pan with butter
- Place overlapping zucchini slices in baking dish, layering it with onions and cheese between each layer
- You can use a round dish or square
- In a small bowl combine sour cream with garlic powder, salt and pepper and just enough cream to thin the mixture.
- Spread sour cream mixture over the zucchini
- Bake at 350 degrees for 35 minutes or until casserole is brown and bubbly on top.
- Let rest in oven for 10 minutes.
Notes
1/4 of the recipe has 3 net carbs. See bottom of this recipe card for nutritional information.
Nutrition Information:
Yield: 4 Serving Size: 1/4 recipeAmount Per Serving: Calories: 200Total Fat: 16.8gSaturated Fat: 10.3gCholesterol: 48mgCarbohydrates: 4gNet Carbohydrates: 3gFiber: 1gProtein: 9g
Need More Keto Zucchini Ideas and Recipes?
Keto and Low Carb Zucchini Recipes that are easy and delicious! A savory, crunchy waffle with a cheese crust (also called a chaffle). Easy to make and a delicious way to use up your garden zucchini! An easy one pan family and budget friendly dish! Great for vegetarian keto or meatless Monday! Great low carb side dish that even the kids will love! Keto zucchini pizza boats are fun and easy to make and a great way to use up all that extra summer squash in your garden! I like them in the airfryer because it keeps the heat out of your kitchen but oven directions are here as well! Load up your favorite toppings! All the pizza taste without the carbs! Your family will love these zucchini pizza bites! Easy to make as an appetizer for a party. This keto bisquick zucchini bake recipe is a throwback to my childhood. A delicious combination of zucchini, onion, bacon and cheese, your family will gobble up every bite! One Pan Skillet and Casserole meals are perfect for busy weeknights to help you stay Keto and Low Carb. Keto Chicken Breasts with Mushroom sauce uses skinless chicken breasts covered in mushroom sauce made with only the juices. We elevated the flavors with the addition of fresh herbs and made it creamy by adding some goat cheese. Using the Instant Pot keeps the dish moist and delicious! Low Carb Skillet Pizza Chicken Thighs that uses only one pan! Family and budget friendly keto recipe that is fast and easy to prepare. This easy keto philly cheesesteak skillet recipe is a fast weeknight meal that comes together in about 30 minutes with only 2 net carbs! Family friendly, it is a one pan dinner to make cleanup a breeze as well! A family and budget friendly low carb dinner featuring juicy pork tenderloin. Easy cleanup because it is one pan! An easy one pan family and budget friendly dish! Great for vegetarian keto or meatless Monday! Great low carb side dish that even the kids will love! I grew up on this fast one pan summertime meal! It will become a family favorite and they won't know or care that this is low in carbs! This cast iron skillet pepperoni pizza recipe is good for both Keto as well as relaxed Carnivore. If you are doing a Carnivore challenge, you don't have to miss pizza night! Serve with wings on the side! Keto Egg Roll in a Bowl has all the flavor without the carbs of your favorite asian inspired dish! Perfect family and budget friendly dinner that comes together in minutes. A weeknight staple!More Zucchini Recipes!
Keto Zucchini Chaffle Recipe
Easy Zucchini Casserole - Cheesy, Low Carb, Keto and Delicious!
Keto Zucchini Pizza Boats in Airfryer or Oven
Low Carb Zucchini Pizza Bites Recipe
Keto Bisquick Zucchini Bake
Other One Pan Skillet Meals and Casseroles Your Family Will Love!
Keto Chicken Breasts with Mushroom Sauce and Goat Cheese for Instant Pot
One Pan Keto Pizza Chicken Thighs
Keto Philly Cheesesteak Skillet Recipe
Keto One Pan Pork Tenderloin Cabbage Skillet
Easy Zucchini Casserole - Cheesy, Low Carb, Keto and Delicious!
Keto Green Beans & Bacon Crack Recipe from my Grandma!
Carnivore Skillet Pepperoni Pizza
Easy Keto Egg Roll In A Bowl Crack Slaw Recipe
Save this cheesy keto baked zucchini dish to Pinterest!
Why is it that you have the word ” Print” at the top of the recipe but it refuses to print?
Are you really blaming me for your technical issues? It prints just fine for me!
Made this, so good. I love zucchini, he doesn’t. But I got complements for this one. Thank you for this recipe. Yay! zucchini!
Yes, yay to zucchini! Even my kids always liked this one! I love those commercials where the kids move out after you stop using cheese, lol!
I look forward to making this recipe tonight, though I think the nutrition information is rather wrong. A small onion alone is 5g carbs, a medium zucchini is 3g net carbs (×2), 1/2c sour cream is 5 net carbs, plus everything else… I calculated a total of 6g net carbs, 17g fat and 9g protein per 1/4 recipe.
What calculator are you using? I just ran this recipe through mine again (I used Happy Forks) and got 3 net carbs again! But this is exactly why I don’t like providing nutritional info because I honestly don’t think people should rely on what someone else has calculated. Mistakes can be made, a food can be in a database set up incorrectly. Anyways, I hope you like the dish!
The recipes all look yummy!
I see someone asked for nutrient values, I would like to know that also, as well as serving sizes. My serving might be different than others -one slice, one cup, 4 ounces, or the whole freaking pan! LOL
I will definitely update the nutritional info later on today since I have some time on my hands right now, lol! And I could easily eat the entire pan of this as well!
What kind of cream are you talking about?
I normally use heavy cream for something like this but you could use coconut milk or cream if you are dairy free. The carb calculation is done with heavy cream.
You don’t have a printable version of this recipe? I hate printing recipes with ads in them!
I didn’t realize the recipe card was missing, so thanks so much for pointing it out! I’ve added a quick one back in there.
Why do you only post the nutrient value on some recipes, I enjoy most of the recipes but would like to see the nutrient value as well, yes I can figure it out but it would be beneficial to have the figures before I decide to add it to my meal plan
well, the honest answer is that sometimes I just run out of time and don’t get back to it. I never rely on the nutrient values that people post on their recipes because I’m a tweaker but I guess if someone actually follows my recipe exactly to a T , they would be able to use it. On the bright side, I have recently hired an assistant to help me update my recipes so hopefully all we be consistent soon! Thanks for your patience!