Name: Low Carb Zucchini Au Gratin Casserole
Prep time: 10 min
Cook time: 45 min
Total time: 60 min
Ingredients: 4 cups zucchini, chopped; 1 tablespoon dried minced onion; 1/2 teaspoon salt; 1/4 teaspoon pepper; 1 1/2 cups gruyere or Swiss cheese, shredded; 3/4 cup cream, heavy; 1/2 cup ground pork rinds; 1/4 cup Parmesan cheese, grated

This low carb zucchini au gratin casserole is a delicious side dish to make this summer. Take one of those huge zucchinis from your garden and quickly make this cheesy keto casserole with only 5.1g net carbs.

You might also like feta & zucchini low carb side dish.

low carb zucchini au gratin casserole on blue tea towel

While winter might be comfort food season, I like a good low carb casserole any time of the year. So when my husband handed me yet another huge zucchini from his garden I thought about making this low carb zucchini au gratin casserole.

I’m the only one in my family that eats zucchini but that’s ok because I love it. I made this casserole, ate it for lunch and froze portions for easy microwaveable meals. This zucchini casserole makes 4 good servings and each one has only 5.1g net carbs.

Other Low Carb Zucchini Recipes

Summer is prime zucchini time. I have so many zucchini recipes on this blog. If you like zucchini please check out some of these popular low carb zucchini recipes. They are all rather easy and definitely delicious!

Who would know low carb zucchini noodles carbonara could taste so good! This easy low carb pasta dish takes less than 20 minutes to make and is so rich and creamy you will really enjoy the veggie noodles!

These savory zucchini waffles are gluten free and low carb. They make a great low carb breakfast or snack and you can even freeze them for later. Only 5 ingredients and 3.1g net carbs per waffle.

I also have two other zucchini posts: 21 summer zucchini recipes and 7 low carb recipes that will make you love zucchini noodles. I still have a few more zucchini recipes coming in the next few weeks! Zucchini overload??

aerial view of zucchini casserole in baking dish with a small plate serving, wooden spoon and sea salt.

How Many Carbs In Zucchini?

Zucchini is a low carb vegetable and best of all it’s very versatile. You can eat it raw, stuffed, made into noodles or in casseroles and soups! It’s also great roasted. The nutritional information for 1 cup of zucchini chopped is 2.6g net carbs according to the USDA.gov. So grab those garden zucchini and get cooking.

Low Carb Zucchini Au Gratin Recipe

It doesn’t really matter what size zucchini you use so this is a good recipe for those big clubs people are always trying to get rid of.

Let’s get started. Chop the zucchini and microwave for 3 minutes. Then put it in a tea towel and gently squeeze out the water. Zucchini has a lot of water in it and you want it get out as much as you can because there will be more after cooking.

Now just add the cooked zucchini to a baking dish and mix in the dried minced onion, salt and pepper. Top with shredded gruyere cheese. I used gruyere but Swiss cheese would also work.

zucchini and cheese in white baking dish before baking

Pour the cream over top and then sprinkle the pork rinds and parmesan cheese. That’s all there is to it.

low carb zucchini au gratin casserole before going into oven

Pop it into the oven and bake for 45 minutes until nice and bubbly. Note there still may be some excess liquid but you’ll see that it won’t effect the taste.

white plate with zucchini au gratin and baking dish in background

Other Low Carb Casseroles To Try

If you like low carb casseroles you might like a few of these. As I mentioned above, I really like casseroles. They are filling, freeze very well and make a great lunch. Here are a few other easy keto casseroles to try.

closeup up of low carb zucchini au gratin with a spoonful

Well I hope you give this low carb zucchini au gratin casserole a try. It’s so easy and filling! You can eat this is a side dish or try to freeze some for lunches. The nutritional information for 1 serving is:

429 cals / 35.3g fat / 6.5g carbs / 1.4g fiber / 23.3g protein = 5.1g net carbs

Where To Buy Pork Rind Crumbs

If you don’t want to make your own pork rind crumbs you can always buy these Pork Panko breading crumbs on Amazon!