This Chicken Zucchini Bake casserole has a delicious blend of diced chicken, zucchini, and mushrooms mixed with shredded Italian cheese blend, sour cream, green onion, and egg seasoned with basil, salt, and fresh ground black pepper.
Why I love this recipe
This easy to prepare recipe is super delicious and low-carb. It makes a great breakfast, lunch, or dinner for two to four.

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Ingredients
(amounts are listed in the recipe card at the bottom of the post)
boneless chicken
fresh mushrooms
zucchini
butter
Salt and black pepper
shredded Italian cheese blend
sour cream
green onions
eggs
dried basil
Equipment used for this recipe
- cutting board
- large skillet
- mixing bowl
- two 18.6 ounce oven safe dishes or and 8×8 casserole dish
- cork trivets
How to make Chicken Zucchini Casserole
Step 1 – Preheat the oven to 375 F.
Step 2 – On a cutting board, dice the chicken into bite-sized cubes.

Step 3 – Slice the green onions, mushrooms, and zucchini. Cut the zucchini slices into halves or quarters.

Step 4 – Melt the butter in a large pan on medium heat.
Step 5 – Add the chicken, zucchini, mushrooms, salt and pepper to the frying pan. Cook and stir often, until tender, about 5 minutes. Drain in a colander.

Step 6 – In a bowl, mix together the cheese, sour cream, green onions, eggs, basil, salt, and black pepper until well combined.

Step 7 – Stir in the chicken, zucchini and mushrooms until well coated.

Step 8 – Spray two 18.6 ounce individual baking dishes with non-stick spray. Click for 18.6 ounce oven safe baking dishes.
Step 9 – Pour the chicken and cheese mixture into the two dishes, divided evenly.

Step 10 – Bake for 30-35 minutes.
Step 11 – Allow to cool 5 minutes before serving.
Step 12 – Caution – dishes will be hot. Serve hot dishes on top of pot holders or cork trivets to protect the table or counter top. Click for cork trivets.

Recipe FAQ’s
Place the zucchini casserole in an airtight storage container in the refrigerator for up to 4 days. To Reheat – warm leftovers in a baking dish in the oven at 350 degrees F for about 20 minutes or in the microwave until heated through.
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Chicken Zucchini Bake
This Chicken Zucchini Bake has a delicious blend of diced chicken, zucchini, and mushrooms mixed with shredded Italian cheese blend, sour cream, green onion, and egg seasoned with basil, salt, and fresh ground black pepper.
Ingredients
- 8 ounces boneless chicken
- 4 ounces fresh mushrooms
- 1 medium zucchini
- 2 Tablespoons butter
- Salt and fresh ground black pepper, to taste
- 2 cups shredded Italian cheese blend
- 1/2 cup sour cream
- 2 green onions
- 2 eggs - large or jumbo (beaten)
- 2 teaspoon dried basil
Instructions
- Preheat the oven to 375 F.
- On a cutting board, dice the chicken into bite-sized cubes.
- Slice the green onions, mushrooms, and zucchini. Cut the zucchini slices into halves or quarters.
- Melt the butter in a large pan on medium heat.
- Add the chicken, zucchini, mushrooms, salt and pepper to the frying pan. Cook and stir often, until tender, about 5 minutes. Drain in a colander.
- In a bowl, mix together the cheese, sour cream, green onions, beaten eggs,
basil, salt, and black pepper, until well combined. - Stir in the chicken, zucchini and mushrooms until well
coated. - Spray two 18.6 ounce individual baking dishes with non-stick spray. Click for 18.6 ounce oven safe baking dishes.
- Pour the chicken and cheese mixture into the two dishes,
divided evenly. - Bake 30-35 minutes.
- Allow to cool 5 minutes before serving.
- Serve hot dishes on top of pot holders or trivets to protect the table or counter top. Click for cork trivets.
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Nutrition Information:
Yield:
4Serving Size:
1Amount Per Serving: Calories: 472Total Fat: 34gSaturated Fat: 18gTrans Fat: 0gUnsaturated Fat: 12gCholesterol: 229mgSodium: 477mgCarbohydrates: 7gFiber: 2gSugar: 3gProtein: 35g
Nutrition information is a guideline only, is calculated automatically by third party software, and absolute accuracy is not guaranteed.

Hi, I’m Zona. My husband and I are empty-nesters and parents of one adult son. I have a passion for recipes and I share all the tips, tricks, and resources I can find (or create) to help you cook for two.
Ron
Sunday 19th of November 2023
Amazingly good! The first time, I used carmelized onion. The second, green onions. I also used a hint of fresh ginger on both. Really good!!!
Stephanie
Saturday 18th of November 2023
Tried this while relatives were visiting. It was delicious and everyone enjoyed it! And it kept well in the fridge and was very tasty as leftovers! I’ll make it again.
Karen
Monday 13th of November 2023
I've made this a few times and like it more every time. Don't skip the draining of the chicken/zucchini/mushroom mix...its important!
I added an extra sprinkle of cheese on the top and before baking it and a handful of French Fried Onions too. They add a wonderful crunch!
Susan
Thursday 5th of October 2023
This casserole is delicous but very watery. I don't know if that's how it is supposed to be or not.
Zona
Friday 6th of October 2023
Hi Susan, it should not be watery. Make sure you are draining the chicken mixture well in step 5. Also make sure you are using large or jumbo sized eggs. I hope that helps and I'm so glad you enjoyed it :)
Renee
Thursday 5th of October 2023
Made this last night and it was super delicious! Thank you!!