Delicious Creamy Chicken and Mushroom Casserole
If you’re on the hunt for a cozy and comforting dish to satisfy your cravings, look no further!
This creamy chicken and mushroom casserole is the ultimate comfort food that will warm your heart and fill your stomach.
With tender chicken, earthy mushrooms, and a rich creamy sauce, this recipe is sure to become a family favorite. So, let’s dive into this delightful dish!
Ingredients Needed
- 2.25 lbs (about 1 kg) of diced chicken breasts (about 5 chicken breasts)
- 45 grams (about 6 tablespoons) of plain all-purpose flour
- ½ teaspoon of salt
- ½ teaspoon of black pepper
- 2 tablespoons of oil for frying
- 2 tablespoons of unsalted butter
- 3 medium onions, peeled and finely diced
- 5 cloves of garlic, minced
- 1 teaspoon of dried thyme
- ½ teaspoon of celery salt
- 25 grams (about 3 tablespoons) of plain all-purpose flour (for the sauce)
- 1 liter (4.25 cups) of chicken stock
- 300 ml (1.25 cups) of milk (full fat or half fat)
- 2 tablespoons of lemon juice (about the juice from 1 lemon)
- 20 chestnut mushrooms, thickly sliced
- Optional: 240 ml (1 cup) of double or heavy cream
- Chopped parsley for garnish
Step-by-Step Guide to Making Creamy Chicken and Mushroom Casserole
Step 1: Prepare the Chicken
Start by taking your diced chicken breasts and coating them with flour, salt, and pepper. Toss everything together until the chicken is well coated.

Step 2: Brown the Chicken
Heat 2 tablespoons of oil in a large pan over high heat. Add the chicken in batches to avoid overcrowding the pan. Brown the chicken for a few minutes, then transfer it to a bowl.

Step 3: Sauté the Onions and Garlic
In the same pan, add 2 tablespoons of unsalted butter. Once melted, add the diced onions and minced garlic. Sauté for about 5-10 minutes until the onions are soft.

Step 4: Add Seasonings
Add 1 teaspoon of dried thyme and ½ teaspoon of celery salt to the onion mixture. Stir well to combine.

Step 5: Make the Sauce Base
Add 25 grams (3 tablespoons) of flour to the onion mixture and stir until fully combined. This will help thicken the sauce.

Step 6: Add Chicken Stock
Slowly pour in 1 liter of chicken stock while whisking to prevent lumps. Keep stirring until the stock is fully incorporated.

Step 7: Incorporate Milk
Next, add 300 ml of milk to the mixture. Stir until well combined and heat until the sauce begins to gently boil.

Step 8: Add Lemon Juice and Mushrooms
Stir in 2 tablespoons of lemon juice and the sliced mushrooms. This adds a fresh flavor to the casserole.

Step 9: Combine Chicken with Sauce
Add the browned chicken back into the pan along with any juices. Stir everything together carefully.

Step 10: Simmer the Casserole
Bring the mixture to a simmer. Cover the pan with a lid and let it cook gently for about 20 minutes. This will allow the chicken to cook through and the flavors to meld.

Step 11: Stir in the Cream (Optional)
If you want an extra creamy texture, add 240 ml of double or heavy cream. Stir it in and let it bubble for an additional 5 minutes.

Step 12: Serve with Mashed Potatoes
Serve the creamy chicken and mushroom casserole over a generous helping of mashed potatoes. This dish is perfect for a chilly day!

Step 13: Garnish
Finish off with a sprinkle of chopped parsley for a touch of freshness and color.

Step 14: Enjoy Your Meal!
Dig in and enjoy the comforting flavors of this creamy chicken and mushroom casserole!
This creamy chicken and mushroom casserole is a delightful dish that combines rich flavors and comforting textures. Perfect for family dinners, it’s sure to please everyone at the table. Enjoy your cooking and let me know how it turns out!