Easy Zucchini Casserole – Cheesy, Low Carb, Keto and Delicious!

keto zucchini gratin in casserole dish
easy zucchini casserole gratin

Try this delicious Keto zucchini casserole. I love this keto zucchini lasagna or casserole and make it all the time. 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!

easy zucchini casserole

 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)

  • 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 below )
  • 1/2 cup sour cream
  • 1-2 tbsp cream
  • 1 teaspoon garlic powder
  • salt and pepper to taste

easy zucchini cheese casserole

  •  

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 making zucchini gratin casserole
  • 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.

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

Yield: 4 servings

Easy Zucchini Casserole - Cheesy, Low Carb, Keto and Delicious!

keto zucchini gratin in casserole dish

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!

Prep Time 10 minutes
Cook Time 35 minutes
Additional Time 3 minutes
Total Time 48 minutes

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

  1. Grease a 9 inch baking pan with butter
  2. Place overlapping zucchini slices in baking dish, layering it with onions and cheese between each layer
  3. You can use a round dish or square 
  4. In a small bowl combine sour cream with garlic powder, salt and pepper and just enough cream to thin the mixture.
  5. Spread sour cream mixture over the zucchini
  6. Bake at 350 degrees for 35 minutes or until casserole is brown and bubbly on top.
  7. 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 recipe

Amount Per Serving: Calories: 200Total Fat: 16.8gSaturated Fat: 10.3gCholesterol: 48mgCarbohydrates: 4gNet Carbohydrates: 3gFiber: 1gProtein: 9g

Did you make this recipe?

Please leave a comment on the blog or tag me on Instagram! @ketogenic.woman. Follow me on Pinterest by clicking the Pinterest button to the left!

Other One Pan Skillet Meals and Casseroles Your Family Will Love!

One Pan Skillet and Casserole meals are perfect for busy weeknights to help you stay Keto and Low Carb.

Save this cheesy keto baked zucchini dish to Pinterest!

Keto zucchini casserole, low carb and delicious!
Easy Cheesy Baked Zucchini is going to be a family favorite! Perfect budget keto meal!

Vegetarian keto one pan dinner casserole.
Vegetarian keto one pan dinner casserole.
Easy Keto Zucchini Gratin. This zucchini casserole is cheesy and delicious.

 

Easy Keto Zucchini Gratin. This zucchini casserole is cheesy and delicious

 

 

Easy Keto Zucchini Gratin. This zucchini casserole is cheesy and delicious

 

Easy Keto Zucchini Gratin. This zucchini casserole is cheesy and delicious

Keto Low Carb Zucchini Gratin

8 thoughts on “Easy Zucchini Casserole – Cheesy, Low Carb, Keto and Delicious!”

  1. 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.

    1. 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!

  2. 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

    1. 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!

    1. 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.

  3. 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

    1. 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!

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