Creamy Chicken Casserole with mushrooms is a treasure of a recipe. It’s popularly called “Chicken Gloria” and it will win you over. This chicken bake is the perfect party dish and is a reader favorite.

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We love easy chicken casserole recipes like Chicken Tetrazzini and One-Pot Chicken and Rice. This Chicken and Mushroom Casserole does not disappoint!
Chicken Casserole Video
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Why we love this Chicken Bake
Crowd-Pleaser! Galina (my sister’s mama-in-law) is an amazing cook and this is her chicken and mushroom casserole. It is always a hit at parties and church potlucks. We make this often.
The chicken is incredibly tender – you will savor every morsel. I’ve seen sorta-somewhat similar recipes online referred to as Chicken Gloria, but I love that this one is made from scratch. It uses simple, non-canned ingredients (no cream of chicken soup needed).
Reheats Well – This chicken and mushroom casserole also re-heats really well (if you are lucky enough to have leftovers). You will likely add this recipe to your list of favorites.
Ingredients for Chicken Casserole
The ingredients for this recipe are surprisingly simple but they just work (see full printable ingredient list below):
- Chicken breast (or chicken tenders)
- Chicken broth
- Half and half*
- All-purpose flour (or use a GF substitute)
- Mushrooms
- Onion – it disappears into the sauce
- Garlic – don’t skip it
- Lemon juice – fresh is best
*What is half and half? Half and half is basically light cream. If you aren’t able to find “half and half” at your grocery store, you can substitute with equal parts of milk and heavy cream.

Can I Substitute the Mushrooms?
You can replace white mushrooms with portabello mushrooms. If you don’t like mushrooms, you can substitute with different vegetables, just pick sturdy veggies (avoid zucchini which turns mushy). Here are some great options to replace mushrooms:
- Frozen peas
- Asparagus
- Caramelized onions
- Artichoke hearts (well-drained)
How to Make Chicken Casserole
1. Sautee Chicken: Season chicken with salt and pepper and dredge in flour. Heat 3 Tbsp oil in a large skillet over medium/high heat. Once the oil is hot, add chicken and saute until golden, and transfer to a 13×9 casserole baking dish.

Pro Tip: Work in batches if needed so you don’t crowd your pan. Don’t worry about cooking the chicken through; it still needs to go in the oven
2. Sautee Mushrooms: Add 3 Tbsp oil along and saute mushrooms and onions until soft and golden. Add garlic and saute another 1-2 min. Spread mixture over the chicken.

3. Make the Sauce: In a medium saucepan (or in the same pan you’ve been using), melt 3 Tbsp butter. Whisk in 3 Tbsp flour until lightly golden (1-2 min). Add 1 1/2 cups chicken broth, 1 Tbsp lemon juice, 1/4 tsp pepper, and whisk until smooth. Add 1 cup half & half and bring to a simmer. Season with salt and pepper to taste.

4. Combine and Bake: Pour sauce over the chicken casserole. Cover with foil and bake chicken and mushroom casserole at 350˚F for 45 minutes. Garnish with parsley if desired.

Serve with
This chicken bakes in gravy so it is great served over Creamy Mashed Potatoes or Egg noodles (the same way we serve Beef Stroganoff). It’s also great paired with these fresh sides:
Common Questions
You can use trimmed chicken thighs or chicken tenders instead. If using chicken tenders, you don’t need to slice them.
Make and combine the chicken and mushrooms and refrigerate. The next day, make the sauce, assemble, and bake as directed.
Yes, you can reheat a pre-baked and chilled chicken casserole in the oven: cover with foil and bake at 325˚f for about 20 minutes or just until hot, or reheat on the stovetop over low heat just until hot, stirring occasionally.
Yes! You can freeze leftover chicken casserole. One of my readers shared her method: “It works! I took the pan out of the freezer, left it in the fridge most of the day, and reheated it in a 350* oven for about 40 minutes.”
One of our readers reported great results using a multi-cooker/ slow cooker: brown the chicken in the bottom of the slow cooker using the sautee function and remove. Sautée onions and mushrooms then return chicken to the pan. Combine sauce ingredients in a pan on the stove, pour it over the chicken, and slow-cook on low for five hours.

More Casserole Recipes:
Casseroles are perfect for parties and gatherings because they are easy to make and easy to scale up. These casserole recipes always get rave reviews:
- Lasagna – arguably the “ultimate” casserole
- Stuffed Shells – so easy with a 3 cheese filling
- Loaded Mashed Potato Casserole – creamy, cheesy, delicious!
- Green Bean Casserole – elegant and made from scratch
- Sweet Potato Casserole – with crunchy pecan topping
- Baked Tilapia Casserole – topped with veggies
Chicken Casserole Recipe (Chicken Gloria)

Ingredients
Ingredients for Chicken and Mushroom Casserole:
- 2 1/2 lbs chicken breasts , (4 to 5 large), cut into 1 -inch thick strips
- 1 1/2 tsp sea salt , plus more to taste
- 1/4 tsp black pepper, plus more to taste
- 1 cup all-purpose flour , to coat the chicken
- 6 Tbsp olive oil, divided
- 1 lb white mushrooms, thickly sliced
- 1 medium onion, finely diced
- 3 garlic cloves, minced
Ingredients for the Sauce:
- 3 Tbsp unsalted butter
- 3 Tbsp all-purpose flour, for the sauce
- 1 1/2 cups chicken broth
- 1 Tbsp lemon juice
- 1 cup half and half, or 1/2 cup milk + 1/2 cup heavy cream
Instructions
- Season chicken with salt and pepper and dredge both sides in flour. Heat 3 Tbsp oil in a large skillet over medium/high heat. Once oil is hot, add chicken and saute until golden. Work in batches if needed so you don't crowd your pan. Don't worry about cooking the chicken through; it still needs to go in the oven. Transfer chicken to a 13×9 casserole baking dish.
- Scrape of any debris from the skillet. Add 3 Tbsp oil along with sliced mushrooms and diced onions and saute until soft and golden. Add garlic and saute another 1-2 min. Spread mixture over the chicken.
- In a medium saucepan (or in the same pan you’ve been using), melt 3 Tbsp butter. Whisk in 3 Tbsp flour until lightly golden (1-2 min).
- Add 1 1/2 cups chicken broth, 1 Tbsp lemon juice, 1/4 tsp pepper, and whisk until smooth. Add 1 cup half & half and bring to a simmer. Season generously with salt and pepper to taste.
- Pour sauce over the chicken and mushrooms. Cover with foil and bake at 350˚F for 45 minutes. Serve warm or hot over mashed potatoes, pasta or rice.
I Made This Recipe To Kick Off The Memorial Day Weekend!
Served With your caesar salad
It Was A Big Hit !
My Guests Were Actually Scraping The Side Of The Casserole Dish !
Thanks For The Great Recipes !
That’s awesome feedback, Johnny. Thank you for sharing that with us!
Can you use bone in split chicken breasts instead of boneless?
I imagine that will work too, please share with us how it turns out if you try it!
This is the second time making this recipe, I used boneless skinless chicken thighs instead of breast meat. It is wonderful! oh my goodness, love it!
That’s just awesome, Debbie! Thank you for sharing your wonderful review!
I just made this tonight and it was SO delicious and easy to make! It is a most welcome addition to my rotation. I know the leftovers are going to be just as delicious.
Thank you for sharing your wonderful review with me, Denise! I’m so glad you enjoyed it!
This is absolutely delicious I have made it three times every time my husband tells me you can make this again
That’s just awesome! Thank you for the wonderful review, Mary Jean! I’m happy you’re enjoying my recipes!
Another winner Natasha, thank you. Made it today and it’s delicious……love the way your recipes are so full of information, & the step by step guide allows even the least confident of cooks to give it a go.
I’m so happy our recipes my helpful, Julz! Thank you for sharing that wonderful review with me.
Excellent. Halved recipe to 5 people (for 2 with some leftovers), but needed did extra mushrooms. Mixed some white wine in with broth. Prep took me longer.
Thank you so much for sharing that with me.
Had left over chicken & mushroom to use. This recipe is FANTASTIC ! Added cooked white rice to the sauce and grated Parmesan on final mix YUUMMY💕
I’m so glad to hear that! Thank you so much for your wonderful review and feedback.
I made this a few nights ago. I had to halve the recipe since there is just the 2 of us, and we still ate it for several days……we didn’t mind since it was DELICIOUS!!! It took a little longer to make that I thought it would but it was certainly worth it. The only mistake I made was not covering it before putting in the oven. It was still great but the sauce got really thick. I’ll not forget that step the next time I make it though.
I’m so glad you enjoyed it! Thank you so much for sharing that with me.
I love your recipes simple and delicious 👌👌
I’m so happy you enjoyed that. Thank you for sharing that with us!
This was delicious! Thank you!
You’re welcome! I’m so happy you enjoyed it!
Hi Natasha, I made this creamy chicken last night over rice and it was a hit! My husband and son had seconds! Now that’s a success in my house 👍 thank you and keep up the great work!
Happy Easter!💜💛💙
You’re welcome, Eva. Glad it was a hit and Happy Easter too!
Sounds great, but am allergic to milk so no half and half…
WHAT CAN I SUBSTITUTE?
HI Ruth, I haven’t tested anything else. The closest thing might be canned coconut milk (full fat), although I haven’t tested that so I can’t say how it will affect the creamy consistency. One of my readers reported great results. here is what they wrote: “instead of the milk: 1/3 of each, cream, coconut milk and rice milk. (I don’t like either of those flavors on it’s own so I tried to mix them which worked a treat!”
I just made mine with canned coconut milk and it tastes and looks great.
Thank you so much for sharing that with me.
I tried it and we love it. My husband always ordered this dish whenever we go to out favourite french restaurant but now he prefer to have it at home since your recipes are unbeatable, Natasha. Thank you for another supper easy and delicious recipe.
You’re welcome, Yen! I’m so happy you both enjoyed that.
Made this tonight for my wife and me. Will be a great addition to my family Sunday dinner recipe collection. Thanks.
Perfect! I appreciate your review and feedback, Richard. Thank you!
Natasha I made this last night and my family and guests raved about this dish. My grandchildren loved it! This is definitely one I will make again! Love your recipes!
I’m so glad to hear that, Joanne. Thank you for your great review and feedback!
Hi! Wondering how I can adjust for thin sliced chicken breast?
Hi Kayla, I bet that could work! I hope you love this recipe.
You are my “go to” for recipes when I’m entertaining. I’ve never had anything I cooked from your blog get a bad review. Keep them coming.
Thank you for the wonderful feedback!
I love all your recipes. Have you produced a cook book, if not, you should do.
I am starting the process and have begun. It’s still going to take a long time to get to the end and publish but It’s in the works. Thank you for asking. That is very encouraging.
I can not wait for you to publish a cook book will you e-mail your great supporters when it will happen You are just great my husband loves it when I open your facebook recipes he really loves to listen to you he thinks that you are a riot
Aww! Thank you, Barbara! I don’t have a cookbook out yet, but it’s on my list of life goals, and we recently signed with an agent to make it happen! Yes, I will an announcement once it is ready!
This dish is great made with boneless pork cutlets too! Making it for tonight.
I’m so glad you enjoyed it!