Creamy Chicken Mushroom One Pan Casserole Recipe

Why You’ll Love This Chicken And Mushroom Casserole

This hearty one-pan casserole with chicken and mushrooms in a creamy sauce is a go-to for cozy meals that bring people together. Imagine tender chicken pieces simmered in rich flavors, making it simple yet satisfying for family dinners or potlucks. It’s packed with nutrients and easy tweaks for different tastes, so let’s dive into what makes it special.

One reason this chicken and mushroom casserole stands out is its ease of preparation. This recipe is simple and quick to make, perfect for busy weeknights with minimal ingredients and straightforward steps that let you spend less time cooking. Another plus is the health benefits, as it’s loaded with lean chicken and nutrient-rich mushrooms for a balanced meal full of protein, vitamins, and antioxidants. Plus, it’s versatile, allowing easy adaptations for dietary needs like gluten-free or vegan options without losing that comforting taste.

• Great for gatherings, just like the crowd-pleasing dishes on my blog.
• Offers a distinctive flavor from the earthy mushrooms and savory chicken blend.
• Makes 10 servings, ideal for sharing at picnics or community events.

With a total time of just over an hour, it’s perfect for busy parents or working pros who want something homemade. The plenty of sauce adds that extra comfort, especially on cold days, turning a simple meal into a memorable one. If you’re curious about how chicken boosts your health, check out this guide on the health benefits of chicken.

Essential Ingredients for Chicken And Mushroom Casserole

Gathering the right ingredients is key to creating this comforting dish. This recipe focuses on fresh, straightforward items that build a creamy, flavorful casserole. Below, you’ll find a complete list based on the exact measurements provided, making it easy to shop and prepare. I like to think of this as the foundation for a meal that brings folks together around the table.

For the Chicken

• 5 chicken breasts (1kg/2.25 lb) chopped into big chunks or strips
• 45 g (6 tbsp) plain (all-purpose) flour
• ½ tsp salt
• ½ tsp black pepper

For the Sauce

• 2 tbsp oil
• 2 tbsp unsalted butter
• 3 small-to-medium onions peeled and finely diced
• 5 cloves garlic peeled and minced
• 1 tsp dried thyme
• ½ tsp celery salt (optional)
• 25 g (3 tbsp) plain (all-purpose) flour
• 1 litre (4 1/4 cups) chicken stock
• 300 ml (1 1/4 cups) whole milk or half-fat
• 2 tbsp freshly squeezed lemon juice (juice of approx. 1 lemon)
• 20 chestnut mushrooms thickly sliced
• ½ tsp salt
• ½ tsp pepper
• 240 ml (1 cup) double (heavy) cream
• 2 tbsp cornflour mixed with 5 tbsp cold water (to make a slurry, optional)
• Small bunch parsley chopped

To Serve

• Mashed potatoes
• Sprouts
• Peas
• Sweetcorn

This structured list ensures you have everything needed for a successful recipe. For more ideas on chicken dishes, try this oven-baked chicken legs recipe on my blog it pairs well with casseroles like this one. Don’t forget, mushrooms add that umami punch, and you can learn more about prepping them from this helpful resource on how to cook mushrooms.

How to Prepare the Perfect Chicken And Mushroom Casserole: Step-by-Step Guide

Getting this chicken and mushroom casserole just right is all about following a few simple steps. Start by prepping your ingredients to make the process smooth and fun, even on a hectic day. This method combines stovetop and oven techniques for that creamy goodness everyone loves. Let’s walk through it so you can whip up a meal that feels like a warm hug.

First, place the chicken in a bowl with 45 g (6 tbsp) plain flour, ½ tsp salt, and ½ tsp black pepper, tossing to coat well. Next, heat 2 tbsp oil in a large frying pan or skillet over high heat and brown the chicken in two batches until golden but not fully cooked; remove and set aside. Then, in the same pan, melt 2 tbsp unsalted butter over low-medium heat, add 3 small-to-medium onions, 5 cloves garlic, 1 tsp dried thyme, and ½ tsp celery salt if using, and cook for 5 minutes until the onions soften.

After that, sprinkle 25 g (3 tbsp) plain flour over the onion mixture and stir for 1 minute. Pour in a splash of 1 litre (4 1/4 cups) chicken stock, whisking to combine and prevent lumps, then gradually add the remaining stock while stirring until a smooth sauce forms. Add 300 ml (1 1/4 cups) whole milk or half-fat and cook until the sauce thickens; stir in 2 tbsp freshly squeezed lemon juice. Now, mix in 20 chestnut mushrooms, the cooked chicken, ½ tsp salt, and ½ tsp pepper, cover with a lid, and simmer gently on the stovetop for 20 minutes. For a baked version, transfer to a casserole dish, cover with foil, and bake at 175°C/350°F for 30 minutes. Finally, remove the lid, stir in 240 ml (1 cup) double cream, and heat through for 5 more minutes, or return to the oven uncovered if baking; if needed, thicken with the optional cornflour slurry. Serve with mashed potatoes, sprouts, peas, and sweetcorn, and sprinkle with the chopped parsley for a fresh finish.

This approach keeps things straightforward, with prep time at 15 minutes and cook time at 50 minutes for a total of 1 hour 5 minutes. It’s adaptable for dietary swaps, like using plant-based cream, which adds to its appeal for home cooks. If you enjoy this style, check out my Mexican chicken and rice recipe for another easy twist on chicken meals.

Dietary Substitutions to Customize Your Chicken And Mushroom Casserole

Making this chicken and mushroom casserole your own is simple with a few smart swaps. Whether you’re cooking for dietary needs or just experimenting, these changes keep the dish tasty and inclusive. It’s all about adapting to what works for you and your guests, from vegans to those watching calories. Let’s explore some easy options to make it fit your style.

For protein and main components, you can replace chicken with tofu or tempeh for plant-based versions, or try turkey for a lean twist. If mushrooms aren’t your thing, swap them with eggplant or zucchini to keep the texture interesting. On the vegetable, sauce, and seasoning side, use coconut cream instead of dairy for a dairy-free option, or switch to vegetable stock to make it vegetarian.

You can also play with herbs like sage or oregano to mix up the flavors. Adding extras like spinach or bell peppers boosts the nutrition and variety, making it even more appealing for food enthusiasts. Remember, these tweaks don’t change the core comfort of the recipe, which is perfect for gatherings.

Mastering Chicken And Mushroom Casserole: Advanced Tips and Variations

Once you’re comfortable with the basics, leveling up your chicken and mushroom casserole becomes exciting. Little tricks can turn a good meal into a great one, from better browning to creative flavors. Think of this as your guide to making it a signature dish for family events or potlucks. Let’s add some flair to keep things fresh.

To start, brown the chicken thoroughly before baking; this step builds deeper flavors and a nicer texture. For flavor variations, toss in smoked paprika or a splash of white wine while searing the chicken to add depth and deglaze the pan. Presentation-wise, serve it in individual ramekins with fresh herbs on top for that special touch, or sprinkle grated cheese if you’re feeling fancy.

Make-ahead options are a game-changer for busy schedules assemble everything ahead and refrigerate for up to 24 hours, or freeze for up to 3 months and thaw before baking. Adding extra veggies like green beans or carrots can enhance the dish, making it even heartier for colder weather. These tips make the recipe versatile for all kinds of cooks, from students to seniors hosting events.

How to Store Chicken And Mushroom Casserole: Best Practices

Keeping your chicken and mushroom casserole fresh is key to enjoying leftovers without any hassle. Proper storage helps maintain that creamy texture and flavor, whether you’re prepping for the week or saving for later. It’s all about simple steps that make meal planning easier for everyone. Let’s cover the basics so you can make the most of this dish.

For refrigeration, store leftovers in an airtight container in the fridge for up to 3 days to keep things tasty. When freezing, portion it into freezer-safe containers and hold for up to 3 months; thaw overnight in the refrigerator before reheating. Reheating works best in the oven at 160°C for even warmth, or use the microwave in short bursts to save time.

Meal prep ideas include making batches ahead label them with dates for safety and use within the guidelines. This way, it’s ready for quick dinners or community gatherings, adding to the joy of shared meals on the blog.

FAQs: Frequently Asked Questions About Chicken And Mushroom Casserole

Chicken And Mushroom Casserole

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🍗 This Creamy Chicken Mushroom One Pan Casserole offers a hearty, comforting meal with tender chicken and rich flavors.
🍄 Featuring a creamy sauce infused with fresh herbs and mushrooms, it’s perfect for a warming dinner any day of the week.

• Total Time: 1 hour 5 minutes
• Yield: 10 servings 1x

Ingredients

Scale 1x2x3x

5 chicken breasts (1kg/2.25 lb) chopped into big chunks or strips

45 g (6 tbsp) plain (all-purpose) flour

½ tsp salt

½ tsp black pepper

2 tbsp oil

2 tbsp unsalted butter

3 small-to-medium onions peeled and finely diced

5 cloves garlic peeled and minced

1 tsp dried thyme

½ tsp celery salt (optional)

25 g (3 tbsp) plain (all-purpose) flour

1 litre (4 1/4 cups) chicken stock

300 ml (1 1/4 cups) whole milk or half-fat

2 tbsp freshly squeezed lemon juice (juice of approx. 1 lemon)

20 chestnut mushrooms thickly sliced

½ tsp salt

½ tsp pepper

240 ml (1 cup) double (heavy) cream

2 tbsp cornflour mixed with 5 tbsp cold water (to make a slurry, optional)

Small bunch parsley chopped

Mashed potatoes

Sprouts

Peas

Sweetcorn

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Instructions

1-First, place the chicken in a bowl with 45 g (6 tbsp) plain flour, ½ tsp salt, and ½ tsp black pepper, tossing to coat well.

2-Next, heat 2 tbsp oil in a large frying pan or skillet over high heat and brown the chicken in two batches until golden but not fully cooked; remove and set aside.

3-Then, in the same pan, melt 2 tbsp unsalted butter over low-medium heat, add 3 small-to-medium onions, 5 cloves garlic, 1 tsp dried thyme, and ½ tsp celery salt if using, and cook for 5 minutes until the onions soften.

4-After that, sprinkle 25 g (3 tbsp) plain flour over the onion mixture and stir for 1 minute.

5-Pour in a splash of 1 litre (4 1/4 cups) chicken stock, whisking to combine and prevent lumps, then gradually add the remaining stock while stirring until a smooth sauce forms.

6-Add 300 ml (1 1/4 cups) whole milk or half-fat and cook until the sauce thickens; stir in 2 tbsp freshly squeezed lemon juice.

7-Now, mix in 20 chestnut mushrooms, the cooked chicken, ½ tsp salt, and ½ tsp pepper, cover with a lid, and simmer gently on the stovetop for 20 minutes.

8-For a baked version, transfer to a casserole dish, cover with foil, and bake at 175°C/350°F for 30 minutes.

9-Finally, remove the lid, stir in 240 ml (1 cup) double cream, and heat through for 5 more minutes, or return to the oven uncovered if baking; if needed, thicken with the optional cornflour slurry.

10-Serve with mashed potatoes, sprouts, peas, and sweetcorn, and sprinkle with the chopped parsley for a fresh finish.

Last Step:

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Notes

🍳 Use a very large pan, as this recipe yields a generous amount.
❄️ This dish can be made ahead, refrigerated for one day, or frozen. Thaw thoroughly before reheating.
🧄 Add vegetables like green beans, carrots, or capsicum for extra flavor and nutrition.

• Author: Brandi Oshea
• Prep Time: 15 minutes
• Cook Time: 50 minutes
• Category: Main Course
• Method: Sautéing, Baking, Simmering
• Cuisine: American

Nutrition

• Serving Size: 1 serving
• Calories: 315
• Sugar: 5g
• Sodium: 887mg
• Fat: 18g
• Saturated Fat: 8g
• Trans Fat: 0.1g
• Carbohydrates: 13g
• Fiber: 1g
• Protein: 25g
• Cholesterol: 101mg