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    Home / Recipes / Keto Dinners

    Baked Chicken and Zucchini Casserole with Tomatoes

    By Lisa MarcAurele on Feb 11, 2021 85 Comments - This post may contain affiliate links. See Disclosure

    82970 shares
    5-Ingredient Recipes Simple Keto Meals Jump to Recipe
    chicken zucchini casserole recipe
    chicken zucchini casserole recipe
    chicken and zucchini casserole pinterest image
    Nut-FreeEgg-FreeKid Friendly

    Here is a delicious low-carb baked chicken and zucchini casserole dish with tomatoes. It's made extra special with some mozzarella cheese melted on top!

    chicken and zucchini casserole bake recipe cover image
    Jump to:
    • Ingredients Needed For Zucchini Casserole
    • How To Make Low-Carb Zucchini Chicken Casserole
    • What To Serve With Chicken and Zucchini Casserole
    • Frequently Asked Questions About Chicken and Zucchini Casserole
    • Baked Chicken and Zucchini Casserole With Tomatoes!
    • Other Casserole Recipes To Try
    • 📖 Recipe

    I've always liked the taste of zucchini with tomato. I usually fry the chicken separately and serve the vegetables on the side.

    This time, I decided to combine them together into a casserole dish and put some melted mozzarella cheese on top.

    This low carb baked chicken and zucchini casserole with tomatoes is a delicious dish that is sure to please!

    Ingredients Needed For Zucchini Casserole

    To keep things simple, I used just a handful of whole ingredients. All of the exact ingredient amounts are in the recipe card at the bottom of this post.

    Chicken

    To make this casserole, you need some chicken breasts. I suggest using boneless and skinless chicken breasts or even chicken breast tenderloins.

    Vegetables

    For the fresh produce, I just used some zucchini and tomato. If you have some yellow squash, slice it up and use it too!

    Seasoning

    I spiced it up with some garlic powder, salt, pepper, basil, and oregano. I basically used my favorite Italian spices.

    Cheese

    Then, I topped it with mozzarella cheese because it has the best melting consistency. You can easily swap this out for your favorite cheese.

    Please note: Check out the recipe card at the bottom for a full list of ingredients used to make this low carb recipe.

    Quick Tips:

    • If you buy thick chicken breasts from the store, slice them really thin. This will help the chicken cook faster and more evenly. This is also why I prefer to buy chicken breast tenders, they are already thin.
    • If you add different veggies to it, just chop them up really small (or slice them really thin). This will help them all bake evenly so that you don't have some crispy or raw pieces and some really cooked and smooshy ones.

    How To Make Low-Carb Zucchini Chicken Casserole

    All of the exact steps for this recipe are in the printable recipe card at the bottom of this post. First, here is an overview of the recipe along with some photos of the process.

    Brown The Chicken Breasts

    For this recipe, I sliced chicken breasts thin, added seasoning, and then browned them up in a skillet.

    Layer them out in your casserole dish.

    preparing chicken for the casserole

    Cook Up All Of The Veggies

    After I cooked the chicken breast on the stove, I placed them in the casserole dish. Then, I sauteed the zucchini and tomatoes in the skillet.

    After both are cooked up nicely, I added the veggies to the casserole dish!

    preparing the zucchini for the casserole

    Add Cheese And Bake

    Top it all with some mozzarella cheese and just bake it until the cheese melts all over the casserole.

    The cheese makes this yummy chicken and zucchini casserole extra special. And, it really gives the dish an added flavor boost!

    It's kind of like a chicken pizza without the crust.

    You'll want to be sure to bake this low carb chicken with zucchini and tomatoes until it's nice and brown. I find it has the best flavor when baked golden.

    chicken and zucchini bake in casserole pan

    What To Serve With Chicken and Zucchini Casserole

    Since this has such a mild and classic flavor, it goes with just about anything you can think of as a side dish. Since it already has zucchini and tomatoes in it, this is a complete meal all on its own.

    A few other low-carb sides will make this feel like a feast. Since this dish has Italian seasonings, it will taste really good with some oven-roasted asparagus that also has some mild flavors.

    If you like mashed potatoes, serve this casserole with some mashed turnips or garlic cauliflower mash. Both of them taste a lot like mashed potatoes but with less than 9g net carbs per serving!

    After dinner, serve a sweet and low-carb dessert. One slice of coconut key lime pie only has 2 grams of net carbs.

    Frequently Asked Questions About Chicken and Zucchini Casserole

    Before we get to the recipe, I wanted to answer some questions people have about my baked chicken and zucchini casserole.

    Can I make this casserole in the crockpot?

    Yes, it's really easy to turn this into a slow cooker meal. You don't have to precook anything, either.

    To make this in the slow cooker, just follow these steps:

    1. Place the sliced chicken breasts (raw) in the slow cooker.
    2. Add 1 cup of chicken broth, seasonings, and the diced tomatoes.
    3. During the last 2 hours of cooking, add the zucchini.
    4. Before you serve it, sprinkle some mozzarella cheese on top.

    That's it! I prefer it in the oven because it bakes it to a delicious golden brown, but the slow cooker also works in a pinch.

    How do you store leftovers?

    Leftovers don't last very long, this recipe really tastes the best fresh out of the oven. Store leftovers in an airtight container in the refrigerator. They will last up to 3 days.

    Can I use squash instead of zucchini?

    Yes, you can use yellow squash instead of zucchini. In fact, if you really want to save time, you can even steam some frozen zucchini and then bake that with your chicken and cheese.

    Can I make this without tomatoes?

    Yes, you can leave out the tomatoes! That won't change the end result enough to make a difference.

    What cheese can I use instead of mozzarella?

    I think the mozzarella really melts the best and has a mild flavor so that the rest of the ingredients stand out more. You can also use sharp cheddar too if that's what you have. I can see that tasting just as good.

    Baked Chicken and Zucchini Casserole With Tomatoes!

    My family loved this chicken and zucchini casserole meal so much that I'm going to have to put the dish on our regular rotation. It really does have a wonderful flavor and is fairly easy to prepare.

    Not to mention, the ingredients are super easy to find!

    If you love chicken, you may also want to check out the low carb chicken casserole recipe collection I put together here. You will find more winning chicken dinners there to keep your family off carbs.

    And, if you'd like a quick and easy chicken skillet dish, our favorite is Filipino Adobo Chicken. My kids always finish it off so there are rarely leftovers. I like to make that recipe with chicken thighs, but breast meat could also be used.

    cut serving of chicken and zucchini bake on white plate

    Other Casserole Recipes To Try

    If you enjoyed this zucchini casserole recipe, then you will love my other low-carb one-pan dishes too. These are some of my favorites:

    • Keto Chicken Cordon Bleu Casserole is super cheesy and has all your favorite French spices in it.
    • Keto Pepper Steak is a takeout favorite that you can serve with cauliflower rice.
    • Mexican Zucchini And Ground Beef Skillet has lots of spice and heat - it's perfect on taco Tuesday!
    • Cabbage Lasagna has lots of cheesy layers, just like the pasta version.
    • Chicken And Shrimp Stir Fry is packed with nutrients with crispy broccoli and zesty Asian sauces.

    ★ FOLLOW ME ON FACEBOOK, PINTEREST, AND INSTAGRAM FOR MORE EASY KETO RECIPES.

    📖 Recipe

    chicken and zucchini casserole bake

    Baked Chicken and Zucchini Casserole with Tomato

    Author: Lisa MarcAurele
    4.56 from 65 votes
    Chicken with zucchini and tomatoes is a great combination. Make it extra special with some mozzarella cheese melted on top. This low carb dish is delicious.
    Prep Time10 mins
    Cook Time28 mins
    Total Time38 mins
    Course: Main Course
    Cuisine: American
    Print Pin Review Recipe Save Recipe View Collections Save Recipe
    Servings 4 servings
    Calories 235

    Video

    Ingredients

    • 2 boneless chicken breasts
    • 1 Tablespoon olive oil
    • dash garlic powder
    • dash salt
    • ½ teaspoon basil
    • dash pepper
    • ½ teaspoon oregano
    • 1 small zucchini
    • 1 medium tomato diced
    • ½ cup mozzarella cheese

    Instructions

    • Butterfly slice each chicken breast in half to make four thin pieces. Season with garlic powder, salt and pepper. Brown chicken slices on each side in olive oil, about 2-3 minutes per side. Place in medium baking dish.
    • Saute zucchini in pan until soft. Add diced tomato, basil, and oregano. Season with salt and pepper. Cook an additional 2-3 minutes. Pour over chicken.
    • Cook in 325 degrees F oven for 20 minutes. Top with mozzarella cheese. Bake an additional 5 minutes.

    Low Carb Sweeteners | Keto Sweetener Conversion Chart

    low carb yum simple keto cookbook

    Nutrition

    Serving: 1slice | Calories: 235 | Carbohydrates: 2g | Protein: 36g | Fat: 3g | Saturated Fat: 3g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 3g | Cholesterol: 99mg | Sodium: 192mg | Potassium: 88mg | Sugar: 1g | Vitamin A: 150IU | Vitamin C: 6.6mg | Calcium: 80mg | Iron: 0.2mg

    Additional Info

    Net Carbs: 2 g | % Carbs: 4.5 % | % Protein: 80.4 % | % Fat: 15.1 % | SmartPoints: 5
    Values
    Array
    (
        [serving_size] => 1
        [calories] => 235
        [carbohydrates] => 2
        [protein] => 36
        [fat] => 3
        [saturated_fat] => 3
        [polyunsaturated_fat] => 3
        [monounsaturated_fat] => 3
        [cholesterol] => 99
        [sodium] => 192
        [potassium] => 88
        [sugar] => 1
        [vitamin_a] => 150
        [vitamin_c] => 6.6
        [calcium] => 80
        [iron] => 0.2
        [serving_unit] => slice
    )
    

    Note on Nutritional Information

    Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.

    © LowCarbYum.com
    Unauthorized use of this material without written permission from Lisa MarcAurele is strictly prohibited unless for personal offline purposes.
    Single photos may be used, provided that full credit is given to LowCarbYum.com along with a link back to the original content.

    Updated on February 11, 2021, with new images and additional recipe information. First published on August 18, 2010.

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    Lisa-Profile

    Lisa MarcAurele has been creating keto friendly recipes since 2010. She enjoys experimenting in the kitchen to create low sugar foods that taste like high carb favorites!

    Lisa's recipes have been featured on popular magazine sites including Fitness, Shape, Country Living, Women's Health, and Men's Health. Her long-awaited cookbook, 5-Ingredient Keto, is also a popular go-to for those on a low-carb lifestyle. Learn more about Lisa....

    Reader Interactions

    Comments

      « Previous 1 2 3
    1. Sandy

      January 15, 2022 at 5:32 pm

      5 stars
      I absolutely love this dish! I have to admit though, I always use way more zucchini than the recipe calls for because I love zucchini. I’m having it for dinner tonight and can hardly wait. It is definitely YUM!

      Reply
    2. Angela

      August 06, 2021 at 3:03 pm

      5 stars
      Yummy

      Reply
    3. sandra phillips

      May 07, 2021 at 3:24 pm

      addition to previous comment..i served it over rice, but riced cauliflower would work just as well

      Reply
    4. sandra phillips

      May 07, 2021 at 3:23 pm

      5 stars
      i pan fried the chicken til brown, removed from pan, sauted onions in the oil, added in the sliced zucchini and diced tomato. cooked about 5 mins, added the chicken back, put the lid on and simmered for about 10 mins. removed the lid and sprinkled on the cheese, turned off the heat and covered it for about 5 mins to melt the cheese. turned out awesome and a bit quicker and only used one pan.

      Reply
      • Lisa MarcAurele

        May 08, 2021 at 9:15 am

        Great idea! Thanks for sharing that tip.

        Reply
    5. Jennifer

      March 15, 2021 at 6:25 pm

      This was amazing...just added basil!

      Reply
    6. Heather

      March 07, 2021 at 8:53 am

      Hi! This looks delicious! I would like to know exactly the crockpot way to make it. Is it cooked on high or low and how long? Thanks so much!

      Reply
      • Lisa MarcAurele

        March 08, 2021 at 11:25 am

        I've used a casserole crock pot with it on high for 3 to 4 hours then I add the cheese and place in the oven to melt the cheese.

        Reply
        • Rosie

          April 01, 2021 at 10:33 am

          Hi I,m still learning the bee Keto lifestyle and was wondering if I can use a cup of frozen broccoli. Can you please tell me if the net carbs increase and how much. Thank you Rosie

        • Lisa MarcAurele

          April 01, 2021 at 1:48 pm

          You can use frozen broccoli if you'd like instead of zucchini. 1 small zucchini is usually a little over a cup. A small zucchini has about 1.5g net carbs while a cup of broccoli has about 6g net carbs. So it will increase about 1.1g net carbs per serving.

    7. Lisa ward

      November 08, 2020 at 10:23 am

      5 stars
      Prepped this recipe this morning for dinner tonight and lunches during the week. had some zucchini in the fridge that needed to be used up. I snuck a taste and it was awesome!! The nutritional stats on this are great!! It is an absolutely delicious high protein low carb meal. I have made several recipes on your site and have loved each and every one of them. Thank you for helping make healthy eating delicious!!

      Reply
    8. Rebecca

      October 05, 2020 at 6:52 pm

      I am making this tonight for a woman who is having surgery but they won’t be eating it till Thursday can it be frozen or should I cook it and have them put it in their fridge raider till Thursday how long will it stay OK

      Reply
      • Lisa MarcAurele

        October 06, 2020 at 9:06 am

        It should last about 5 to 7 days after it's cooked in the refrigerator. I recommend that over freezing.

        Reply
    9. CAREN

      August 07, 2020 at 10:43 pm

      5 stars
      Excellent recipe! Cooked tonight for hubby and me and doubled it for another meal. Loved it!!

      Reply
    10. Guy B

      July 20, 2020 at 8:34 pm

      5 stars
      Quick and easy delicious recipe. I add different things it is so versatile mushrooms, onion, red pepper just a great meal.
      Thanks Chris S. for bringing this winner to our attention.

      Reply
    11. Amy Rob

      June 21, 2020 at 9:05 pm

      4 stars
      Super simple and quick to fix… I did a little substitution however… I spiced it up with salt pepper onion and garlic and just a little Cayenne pepper to give it a little kick and it was absolutely fantastic!

      Reply
    12. Diane B

      June 04, 2020 at 1:29 pm

      5 stars
      My daughter made this last night. It was very easy and it was delicious!! Definitely will make a lot more !!!

      Reply
    13. Annette Rathgeber

      May 19, 2020 at 5:29 pm

      4 stars
      This was a quick and easy recipe. I will definitely make it again. You have to be careful to not overcook on the skillet or the chicken will dry out. Otherwise this was perfect.

      Reply
    14. Chandra Olivas

      May 07, 2020 at 8:27 pm

      5 stars
      Delicious and easy! I add some crushed red pepper because we like it spicy!

      Reply
    15. Gayle

      January 30, 2020 at 8:11 pm

      5 stars
      DElicious! One of the easiest low carb recipes

      Reply
    16. Peggy

      September 13, 2019 at 3:42 pm

      5 stars
      Looks delicious am widowed trying to cut back to a one person healthy meal

      Reply
    17. Alicia

      September 08, 2019 at 7:33 pm

      Simply Delicious way to use Fresh items in a Garden. You make me want to Plant some more.) I opt for Lemon Juice sub. the Oil. Works well on any Diet, maybe with Dairy Free Cheese. I love this site, came across while looking for Keto Recipes. I will be stopping by often.)

      Reply
    « Previous 1 2 3

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