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Home » Keto Recipes » Keto Side Dishes

Published: Nov 2, 2020 · by: jenniferbanz

Super Cheesy Zucchini Casserole (Zucchini Gratin)

Give up the potatoes and give this zucchini casserole a try! A thick and cheesy sauce can make any green vegetable taste 100 times better!  You can call this a casserole or an Au Gratin...either way it is so delicious!

zucchini casserole feature image

Any kind of vegetable sliced and doused in a creamy cheese sauce is simply magical.  Zucchini is no exception so I present to you this luscious Zucchini Casserole that will make you think you have died and gone to low carb heaven.

This baked zucchini casserole is so easy and it is so pretty!

HOW TO AVOID WATERY ZUCCHINI CASSEROLE

Everyone knows that zucchini can get pretty watery when it is cooked because it is mostly water.  What I do to eliminate some of the water in the casserole is to salt the zucchini slices in a large bowl with a colander, and let them drain for at least 30 minutes.  Then I lined them nicely in a pie plate.

zucchini in a pie plate

For the cheesy sauce in this zucchini au gratin, I used Monterey jack cheese.  You could use Swiss or gruyere, but I like Monterey jack!  To make the sauce, I warmed heavy cream on the stove, then removed it from the heat.  Then I added the cheese and stirred it until it was completely melted.

I then poured the creamy, cheesy sauce all over the zucchini.

I sprinkled a little Italian seasoning and parmesan on top and baked it in the oven until it was bubbly.

Here are some other delicious low carb side dishes that you should definitely check out:

  • Cauliflower Mac and Cheese
  • Broccoli Salad with Pine Nuts and Feta
  • Leek and Mushroom Cauliflower Risotto 
  • Loaded Cauliflower Casserole
zucchini au gratin in a red casserole

Super Cheesy Zucchini Casserole (Zucchini Gratin)

This baked zucchini casserole or Zucchini Au Gratin is beautiful slices of zucchini doused in a luscious Monterey jack cheese sauce. This is the perfect side dish for any dinner.  
5 from 4 votes
PRINT RECIPE SAVE TO FAVORITESSaved! PIN RECIPE
Course: Side Dish
Cuisine: French
Prep Time: 30 minutes
Cook Time: 30 minutes
Total Time: 1 hour
Servings: 6
Calories: 208kcal
Author: Jennifer Banz

Ingredients

  • 3 Large Zucchini, sliced into ¼ inch slices
  • 1 teaspoon Kosher salt
  • ½ cup Heavy cream
  • 2 cups shredded Monterey Jack cheese
  • ½ teaspoon Italian seasoning
  • ½ Cup Shredded parmesan

Instructions

  • Pre-heat the oven to 400F
  • Toss the zucchini slices with the salt in a large bowl and let sit for at least 30 minutes.  Pat dry with paper towels. This will pull moisture from the zucchini so your casserole will not be watery.
  • In a small sauce pan, heat the heavy cream over medium heat.  Remove from the heat and add the cheese, stirring until melted.  
  • In a pie plate, arrange the zucchini in a circular pattern.  Pour the cheese mixture over the zucchini and sprinkle with the parmesan and Italian seasoning over top.  Bake in the oven for 30 minutes until the sauce starts to brown and becomes bubbly.  

Jennifer's tips

 
  1. You could use any white cheese such as gruyere or Swiss instead of the Monterey jack.
Servings: 6

Nutrition per serving

Calories: 208kcal | Carbohydrates: 4g | Protein: 10g | Fat: 18g | Fiber: 1g

Nutrition is provided as a courtesy only. Please re-calculate on your own with the ingredients and amounts you used for the most accurate data.

Keyword :gluten free, recipe for Zucchini Casserole

 

More Keto Side Dishes

  • Crack Green Beans - Fresh or Canned
  • Keto Coleslaw with a Secret Ingredient!
  • Keto Asian Chopped Salad
  • Keto Jalapeño Cheddar Cornbread Muffins

Reader Interactions

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    Recipe Reviews




  1. Ruth Gosselin says

    June 07, 2022 at 8:51 pm

    Second time making it I loved it

    Reply
  2. Tina Casstevens Wilmoth says

    November 02, 2020 at 7:43 pm

    This looks and sounds amazing! Can’t wait to try it. Thanks so much.

    Reply
  3. Amanda Pennell says

    August 01, 2018 at 12:52 pm

    5 stars
    This was amazing! I did sprinkle a little fresh grated parmasean cheese over also. It is so hot here were aren’t turning on the oven so put it in the BBQ grill and it was amazing and so easy. Thank you so much!

    Reply
    • Dawn Piens says

      August 31, 2021 at 6:02 pm

      5 stars
      This was the best side dish I have ever had, making it again tonight. Plus my husband was a skeptic but he loved it also. The zucchini stayed firm and not soggy which I thought would happen.

      Reply
  4. Kathy says

    November 15, 2017 at 6:11 pm

    5 stars
    Excellent! A nice variation to my tired zucchini reipes.

    Reply
    • jenniferbanz says

      November 16, 2017 at 9:47 am

      SO glad you liked it, Kathy!

      Reply

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Welcome!

Jennifer

Hey there, I'm Jennifer! I’m the creator behind Low Carb with Jennifer and author of the cookbook Live Life Keto. 

I've been cooking low carb/keto for the past 10 years and it has helped me shed over 70 pounds!

My keto recipes reflect my philosophy on cooking...everything needs to be easy, fast, exceptionally delicious, and use common ingredients.

Read More Here

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