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!
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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.
Hi, Thank you so much for this recipe, instant family favorite.
Don’t feel the need to change it in any way, so much flavour.
Thank you
Hello Janet, you’re most welcome. Thank you for your good comments and feedback too!
I must have a more complex pallet. I found this recipe to be a bit on the bland side and I followed it exactly as written. I’m sorry that it didn’t work out, I had high hopes based on all the reviews.
Hi Alina, the ingredients here are simple but it normally has tons of flavor. I wonder if under seasoning could be the culprit.
Hi, this looks amazing. I was wondering if it could possibly work with chicken thighs instead? I am not a huge fan of chicken breast. Thank you!
Hi Alexis, that will work too
Hi! I’ve made this many times (sooo good) but today I’d like to try and incorporate the herbs from your chicken & herb recipe into this one. How would I do that? Should I add them with the mushrooms/onion, or in the sauce? Since I’ll be adding green onion, should I omit the yellow?
Thanks in advance, and thank you for sharing all of your recipes! <3
HI Alexa, I haven’t tried that but this one has a much longer cooking time. You might try adding the herbs in at the end. I haven’t tested it that way to give you exact recommendations though.
So delicious! My husband loved it and 5 a year old loved it also! I love your recipes, so easy to follow.
Fantastic! I am so happy to hear that your family enjoyed this casserole!
Hi there. I was searching for a good chicken casserole recipe and came up with this one that you posted. It was so simple to make along with simple easy-to-find ingredients. I served it as a main dish for an early Thanksgiving dinner, along with some other side dishes, and it was a huge hit. Everyone loved the recipe and the flavor was amazing. We all decided we would use this recipe more often in the future. Thank you so much for sharing, it’s included on my favorites list now.
Hello Maryann, that makes me so happy! Thank you for your wonderful comments and feedback. So glad you loved it!
Great recipe. I omitted the onions and pan seared the chicken and used gluten free flour instead. Very simple recipe and very tasty. Thank you.
Thank you for sharing that with me! I’m so happy you enjoyed that!
Just made this dish it is soooo yummy! will be making it again. Great for meal prep.
I’m so glad you enjoyed it!
I came across this recipe and it looks amazing.
Can I use whole skinless bone in chicken breasts?
I’m lazy and don’t want to cut it up.
Thanks 😊
Hi Arlene, I bet that could work! If you experiment, I would love to know how it turns out!
I’m not a fan of chicken, with that said…this recipe is so yummy and YUMMY! I liked that the onions “melted” into the sauce. Yep, I’ll be making this recipe again! Thank you Natasha
You’re welcome! I’m so happy you enjoyed that!
Hi Natasha,
My husband loved the Creamy Chicken Casserole recipe, he say I am turning into a very good cook. Thanks Natasha 😁
Wow, that is such a nice comment from your husband. Keep up the great work and thanks for giving this recipe a try!
This recipe is beyond amazing! Thank you just wow!
You are most welcome, Yana! Thanks for leaving great feedback.
Can you use jarred mushrooms or do they have to be fresh. Also can you use regular butter instead of unsalted.
Hi Kelli, I recommend using fresh mushrooms for the best flavor but if you only have canned mushrooms available, they would work as well.
Give Galina a great big hug from me! This is my dream recipe, all full of my favorite flavors. So easy to make and utterly delicious.
I’m so happy you enjoyed this recipe, Meg!! That’s so great!
Amazing recipe! I forgot to add half and half but still came out really creamy!
So great to hear that it still came out delicious, Jo. Thanks for your good feedback!
By the way, I give this recipe 5 stars. It was delicious.
Thank you for your perfect rating, we appreciate your great feedback!
Made this tonight for dinner, it was delicious and easy. I only did one thing different I added 3 slices of mozzarella cheese on the top. This is a keeper, I will be making this again. Thanks so much for the recipe.
Sounds great! You are most welcome, Crystal. I hope you love every recipe that you will try!
Absolutely delicious! Just as you said, easy peasy too! I have one question, if I was to make it a day ahead would I cook the chicken completely through? I followed your directions and did not as I cooked it immediately.
Thank you for your wonderful recipes and delightful And upbeat personality!!
Hi Teresa, the way I make this ahead of time is to make and combine the chicken and mushrooms and refrigerate. The next day I make the sauce and bake.
Hi,
I’m going to try this tomorrow, any thoughts on a low/no carb flour substitute?
Thanks.
Hi Lee, I haven’t tried this with a flour substitution. I haven’t tried coconut flour so I can’t speak to that specifically but my sister tested this with GF all-purpose flour and it worked great.
I used blanched almond flour and it worked just fine.
Hi Natasha. I’m looking forward to trying this recipe. If I don’t have time to make my own bone broth do you have a suggestion on which brand to use? Many Thanks.
Hi Elizabeth, we try to make our own or look for an organic brand that doesn’t have any add ons.
Hi, I was wondering if this recipe could be made with chicken thighs instead of chicken breasts? Thank you very much.
Hi Natalie, Yes, that would work. Several people reported great results with chicken thighs.
I made this a couple weeks ago and my wife has already requested it again!! So, I am going to make this again tonight. Thank you for sharing your recipes. We have enjoyed everything we have tried!!
That’s so great Kelli! Thank you for that awesome review!