Chicken Broccoli and Mushroom Casserole Recipe

4 from 57 votes
A white baking dish filled with a cheesy chicken and broccoli casserole, with a portion scooped out and placed on a white plate in the background. The casserole has a golden-brown, bubbly cheese topping. The dish sits on a wooden table.

This chicken, broccoli and mushroom casserole recipe is the perfect family meal. This casserole is rich, full of flavor, comforting and easy to make. If you are looking for a winning dish for Thanksgiving, Christmas or any other holiday or event. This is exactly the recipe you need.

A white baking dish filled with a cheesy chicken and broccoli casserole, with a portion scooped out and placed on a white plate in the background. The casserole has a golden-brown, bubbly cheese topping. The dish sits on a wooden table.

Chicken Broccoli and Mushroom Casserole Recipe

4 from 57 votes
Prep Time 1 hour
WORK TIME 20 minutes
DIFFICULTY Medium
Cuisine American
Servings 6 yields

Ingredients
 

  • 3 Chicken breasts or thighs cut into chunks
  • Salt to taste
  • Pepper to taste
  • 1 teaspoon Paprika
  • 2 tablespoons Oil
  • 1 Onion chopped
  • 3-4 Garlic cloves crushed
  • 2 baskets 400g Mushrooms
  • 1 head Broccoli cut into florets

For the sauce:

  • 5 tablespoons 75g Butter
  • cup 80 Flour
  • 2 cups 480ml Chicken stock
  • ½ cup 120ml Heavy cream
  • Salt to taste
  • Pepper to taste
  • ¼ teaspoon Nutmeg
  • 120 g Mozzarella shredded
  • 120 g Cheddar cheese shredded

Instructions
 

  • DIRECTIONS
    1. Preheat oven to 375F (190C). Prepare large and dip baking dish, set aside.
    2. In a large bowl mix chicken breast, oil, salt, pepper and paprika.
    3. In a large pan, heat oil, add seasoned chicken chunks and cook for 6-7 minutes, until cooked through. Remove from the pan.
    4. To the same pan add 2 tablespoons of olive oil and heat over medium heat. add chopped onion and cook until slightly golden, about 5-6 minutes. Add crushed garlic, sliced mushrooms and cook for 5-6 minutes. Until the mushrooms are softened. Remove from the pan.
    5. Make the sauce: In the same pan melt butter, add flour, whisk until smooth paste forms and cook for 1 minute. Gradually add warm stock and cream, while whisking constantly. Keep whisking over medium-high heat until the sauce is smooth and thickened. Stir in salt, pepper and nutmeg.
    6. To the pan with the sauce add chicken chunks, broccoli florets and mushroom mixture. Mix until combined.
    7. Pour the filling into prepared dish. Sprinkle shredded cheese on top.
    8. Bake for about 20-25 minutes, until golden-brown and bubbly. Let cool slightly before serving.

Video

YouTube video
Nutrition information is automatically generated and thus we can not guarantee it is 100% accurate.

11 Comments

  1. Could you tell me how much the weight of the chicken should be, and if you used boneless for this recipe?

    November 28, 2021
  2. This recipe turned out well, but it was very hard. I thought I would never get done, and then there were many dishes dirtied and a greasy, dirty kitchen to clean up. Also, be careful how much grease and oil you allow into the dish. I poured off the grease from my chicken, and it was still a little bit too greasy. Because the sauce dried out during cooking, I had to add more liquid, and I was using chicken broth which contributed to the grease. I didn’t have a cracker topping (didn’t want cheese)

    May 26, 2022
  3. Patience C. Renzulli says:

    What does “ Prepare large and dip baking dish” mean?

    December 23, 2022
    1. I used a square 8×8 baking dish.

      January 13, 2023
  4. I have a specific taste in mind and I don’t think this dish is it.
    In a memory of mine, ann elder made a dsh that had chicken, broccoli and mushrooms and it tasted different than the base for this one. Her’s had more of a onion soup mix taste with it, although I don’t think that’s what was in it..
    Right now this recipe is in the oven (I used a square 8×8 Pyrex casserole dish) and although I don’t think it’s what I’m looking for, I think it will be tasty just the same.
    I will continue my sear

    January 13, 2023
    1. Nowhere close to the taste I wanted.
      I find it to be too floury, making it thick almost like Alfredo, but thicker.
      The tastes all blend nicely but the broccoli definitely need a bit of softening because it’s still on the crunchier side.
      All in all a nice dish.

      January 13, 2023
  5. READ READ READ this recipe throughly. She has steps in the body of the instructions and not in the list of ingredients. Also the measures were American , cups, tsps. etc and then with the cheese is goes to metric. GRRRR!!!. Very time consuming and really messy with all the pots and bowls which makes it not worth it.

    January 22, 2023
  6. Shannon Drost says:

    I found it to be a really good recipe to use as a guide. I ended up using 6 boneless skinless chicken thighs, more garlic (I measure with my soul), substituted all cheddar for the mozzarella and I ended up with almost 4 cups of chicken stock. I seasoned as I went and actually forgot the nutmeg, but it as really good. Bottom line, make it your own and go with your instincts.

    March 1, 2023
  7. L holbrook says:

    This recipe is a good idea gone bad. There is way too much flour in this recipe. I almost doubled the liquids to get the consistency right. With that much flour the sauce would have been like paste.

    January 7, 2024
  8. What do you serve it with please?

    June 9, 2024
    1. The Cooking Foodie says:

      You can serve it with green beans, salad, fried/sauteed Brussel sprouts

      June 10, 2024
4 from 57 votes (57 ratings without comment)

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