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.

This post may contain affiliate links. Read my disclosure policy.
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
I hope you are inspired to try this chicken casserole for yourself! P.S. If you haven’t already, please subscribe to our YouTube Cooking Channel.
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 Natasha,
Can other veggies be added? If so what would you suggest?
MV
Hi Monica! That is a great question! Several of our readers have commented they added veggies and loved it. Here is what one of our readers wrote “I added some sauteed kale and spinach to get some more veggies. It turned out great. I also served it over pasta for my husband to fill him up more” I hope that helps.
Hi Natasha,
I absolutely love each and every recipe you post! I’m hosting a dinner party and just know this recipe will be a hit, however most of my guest are allergic to mushrooms. What would you suggest I can replace the mushrooms with without taking away from how yummy it is?
Hi Ann! You are so nice! Thank you for sharing that with me. We have only tried this with mushrooms but you could add frozen peas or artichoke hearts. A vegetable that would not get mushy would probably work well.
Peas sounds good, my husband even suggested to add egg noodles to make it a one pot meal.
Thank you!
Can this be made ahead of time and baked later?
Hi Carol, 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!
Instead of half-and-half can I put almond milk?
Hi Veronika, I haven’t tried a dairy-free substitute but one of our readers, Reba, wrote in with the following: “Absolutely delicious! Even after I substituted almond milk for cream since my mom can’t eat dairy – it was extremely tasty!”
This recipe is awesome! Very easy to prepare. Absolutely delicious. Served it over mashed potatoes. Thanks for sharing! Yumm!!
You’re so welcome, Aimee! I’m happy you enjoyed that!
This was perfect! Simple to make yet super tasty! I love that I didn’t have to smother my chicken and mushrooms on the stovetop, they came out perfect from the oven. It looked presentable too! Chicken was soooo soft and juicy! I used iron skillet to bake and added a few minutes since I started mashed potatoes a bit too late.
Hi Mirela, I’m so glad you enjoyed it! Thank you for the wonderful review!
I am lactose intolerant. Could I substitute lactose free milk enriched with ghee for the half and half?
Hi Sue, I haven’t tried substituting that but here is what one of our readers wrote: “Oh my! This was my first ever creamy dish i liked after having to go glutenfree and lactose free. So i adjusted it by using gf plain flour. For the sauce i used Nuttelex, gf flour, homemade beefbroth (which gave this dish an amazing flavor), and then insted of the milk: 1/3 of each, cream, coconut milk and rice milk. (I don’t like either of those flavours on it’s own so i tried to mix them which worked a treat! Will be cooked again!” I hope this helps!
Tried this last night using chicken tenders. It was fantastic! You could cut the chicken with a fork. So tender! I would use less garlic next time, but that’s just personal preference.
Thank you so much for the fantastic review! I’m so happy you enjoyed that!
I love mushrooms, do you think I could double them and the recipe would still turn out ok?
Hi Lauren! I don’t see why not! You may need to fry them in batches, however. If you experiment, let me know how you liked the recipe
Hi, I didn’t see your comment until after! I have a 14 inch pan, but even so it was a bit crowded for all the mushrooms (I did do 2lbs). They browned, but not as golden as I quite wanted so next time I will do batches.
The extra mushrooms in the dish were delectable! Could even have more 😉 IMO haha.
Also, I added a teaspoon of cayenne to the white sauce (oh my gosh it was fabulous!) It was so mild in all that sauce that my infant and toddler loved the recipe and didn’t think it was spicy!
Can this be baked in a deep saute pan instead?
Hi Alexa, if it is large enough and oven safe, I don’t see why not!
I am not really a very good cook and most of my dishes do not come out very well but I tried this tonight and it turned out absolutely perfect. My husband loved it and it will be a keeper! You are now my go to person for meal ideas. Thank you!
That’s so great! It sounds like you have a new favorite!
Natasha,
This recipe is excellent! Do you think it would work with skinless, boneless chicken thighs?
Yes, that would work 😬. Several people reported great results with chicken thighs
Love it, made it this evening, just added a couple of slices of Spanish serano ham to it and served with steamed fresh vegetables. A great tasty warming dinner.
I’m so happy you enjoyed that!
Hi Natasha, I just made this tonight and it was a hit. I like that it doesn’t require a lot of ingredients and was relatively easy to make. Looking forward to trying some of your other recipes.
I’m happy you enjoyed that Eric! Thank you for that great feedback!
Hi Natasha,
When I took it out of the oven the butter/oil was kind of separated from the rest of the sauce and didn’t look as creamy as yours. What did I do wrong? It tasted good though.
Hi Jenny, I haven’t had that happen to my dish but I am more than happy to troubleshoot! Did you make any alterations to the dish? Was it foil covered and mixed will? I’m wondering if the oven temperature may be the culprit?
Thanks Natasha, Love this recipe,- have been making it regularly since I came across it about a year ago.It’s now a family favourite. Thank-you!!
You’re so welcome! I’m so happy you enjoyed that.
You have a “better than bouillon “ on your ingredients picture. Do you use that if you don’t have homemade chicken broth? Same proportions?
Yes! that is correct!
Natasha, what kind of sea salt are you using? Is it better than a regular salt?
Thanks!
Hi Helen, we love the sea salt from Costco – more naturally sourced salt and I think it flavors food better 🙂 I hope you love this chicken casserole! 😉
I only had about half the amount of chicken in the house but kept the other quantities the same for an extra saucy version and I recommend that to others if you like a lot of delicious creamy sauce. it is def not a week night meal though, between the breading, sautéing, making the roux and then baking but definitely a delicious meal and the chicken gets very tender.
I’m so happy you enjoyed that. Thank you for sharing that with us!
I love this! This proves that mushroom is another amazing and indeed a magical plant. Thank you for sharing the mouth-watering recipe. Will surely give it a try
Amazing!
I hope you love this recipe, David!