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.
This as amazing! I was worried about cooking the chicken on a medium/high heat but the chicken was so tender. The sauce was perfect. The only thing is that it took longer to prepare than I was expecting.
I’ll definitely make this again and it’s a great dinner for guests.
Sounds great, Anna. I’m happy to know that you loved this recipe! Thank you for sharing that with us.
Natasha this is a recipe which is very similar to Chicken Tetrazzini! An excellent way to “upgrade” a baked chicken recipe.
Thank you, Jimmy! I’m glad you liked this recipe.
So happy to find the recipe. I have been searching for something similar with not a lot of luck.
So excited to try it.
I hope you love it, Sue! Please share with us too how it goes.
Just having it now & its delicious! Didn’t have lemon juice but substituted 3/4 tsp lemon pepper & added beef broth. Very little added salt & no butter. It’s great!! Thank you for posting. 👍👍
You are very welcome, James. I’m glad you enjoyed this casserole recipe using the substitute ingredient that you used!
My mom used to make this dish when I was growing up in the fifties. She put thyme, a pinch of cayenne, dash of white wine and halved green grapes in with the mushroom sauce. I just made it last week…delish!
Thank you so much for sharing that with me.
I’ve got all these ingredients! Can’t wait for dinner!
Sounds great, Kim! Enjoy and I hope this becomes your new favorite.
This looks like a simple and delicious meal. Can’t wait to try this one!
Hi Katie, sounds good. I hope you love it!
Absolutely incredible! I just love how creamy the casserole was and the flavor was perfection!
Awesome! I’m so happy that you loved this casserole. Thank you for your great review, Stephanie!
I will make this,but will use thighs. I find them tastier and more moist.
Sounds good, Gary. I bet it will be so delicious too!
Tasted amazing!! I didn’t have any kind of broth on hand so I used water instead and heavy cream instead of half and half. Seems to have worked out! Thanks for the great recipe 🙂
You’re welcome! I’m so happy you enjoyed it, Dana!
Hi can i make this in advance and refrigerate then bake it? This recipes looks amazing!!
Hi Tyler, without trying that, it’s hard to say. I think that would work fine, but you may need to bake just slightly longer since the casserole will be chilled going into the oven. I hope you love it!
I love this recipe!!! Thank you so much….i will make this my go to chicken dish.
That’s so great! It sounds like you have a new favorite!
I’d like to add pasta or noodles to the dish, done Al dente, before baking. Anyone tried this?
Hi Cindy, I haven’t tried doing that cooked pasta. I think it might be safer to cook the pasta on the side and serve this dish over the pasta.
Just made this tonight. Added uncooked egg noodles to the bottom of the casserole dish, then chicken, then mushroom ‘ onion part. Used skim milk instead of half/half and you’d never know the difference.
My hubby lived it. Quick, easy and comfort food.
So nice to know that, Susan. Thank you for sharing that with us!
This was a huge hit tonight! I added 1C frozen peas to the mushrooms and onions to give it some color and because we love peas. And honestly, the most tender and delicious chicken – wow! Super easy recipe to follow, too! Thank you!
I’m so glad you enjoyed it, Christina! Thank you for the wonderful review!
Hi Natasha,
I just put this together & I’m serving it tomorrow. Do I bake it now, refrigerate & then reheat tomorrow or can I just leave it now & then bake it tomorrow??😬
I love your recipes. I hope you see this.
Hi Shirley, 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. If you assembled the full recipe, yes that would work well to make it ahead, refrigerate and then reheat. This casserole reheats really well.
Wow. This is soo delicious. Next time I will double the sauce because there was barely enough sauce to put on the noodles. I will put more mushrooms too. This recipe will b regular thing at my home.
My question: can I use left over roasted chicken instead of fried chicken
pieces?
Thank you Natasha for this awesome recipe.
Hi Carolyn, great to hear that you enjoyed this recipe! Yes, you may use leftover roasted chicken too for next time.
Comfort food through and through! Chopped up the mushrooms for my picky eaters and they loved it!
That is the best when kids love what we moms make. That’s so great!
DEFINITELY a ten star but can only give 5. If the cream sauce needs a tad more depth and flavor at the end I add a sprinkling of Knorr Chicken Flavor Bouillon.
That’s so great! It sounds like you have a new favorite!
What if I’m using a Crock pot?
Hi Cyndi, I haven’t tried it in a crockpot so I can’t really recommend it without testing it myself. I don’t recall any of my readers trying it in a slow cooker either. Sorry I can’t be more helpful.
FYI, this works as a freezer meal. I make this weekly, freeze it, and deliver (at no charge) to at-risk Seniors in my area. They ALL love it. I double the sauce and add herbs de provence, then portion it into disposable aluminum pans and add egg noodles, cooked al dente, which is where the “extra” sauce goes. My Seniors LOVE this!! They bake it from frozen and rave about it. One of the absolute best freezer meals in my arsenal.
That is so awesome and great to hear this, Mel. Thank you for sharing that with us! So lovely to know that they love this recipe.
Oh my goodness. What a hit!! This was seriously delicious. Will be making it again!
That’s so great, Jennifer! Thank you for sharing that wonderful review with me!