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.
Made it today, we loved it
I don’t have a lot of skills in the kitchen, this recipe was easy to make.
Thank you for sharing it with us
I’m so happy you loved it. Thanks Hania! 🙂
Has anyone tried this in a crock pot? If so, how did it turn out?
I haven’t. Anyone else?
can you freeze the sauce? It’s delicious but would be nice to have some ready to go for weeknight cooking
I haven’t tried freezing it, but I think it could work. Do you mean the finished/cooked sauce, right?
Oh goodness, does this look good! Think I may have found tomorrow’s dinner!!!
Enjoy! It’s one of our favorites! 🙂
hi Natasha, we tried this recipe tonight (while newborn was sleeping) and it was a massive hit with hubby and kiddies. Recipe is easy to follow and the chicken was so tender. I added a little wine into the sauce and served on mash and frozen veg. Thank you, I’ll now need to try some of your other recipes
Welcome to the blog Susan and thank you for the great review :). I’m happy you all loved the recipe.
Fixed this Sunday . Was great !! did just what you said and it turned out GREAT ! Forgot the lemon juice but it didn’t matter .
I’m so glad you loved it! 🙂 Thanks Larry!
What are the green leaves on top of the mushrooms?
Parsley for garnish 🙂
This recipe was simple but elegant. The family rated it as very good and we will have it again. It will be on our list of “Do Agains” Thank you!!!
I’m so happy you liked it! Thanks Connie 🙂
I like your style. Am trying to get away from all processed foods. Delicious
Thank you Joyce, I’m with you on that :).
I am making this tonight, any suggestions as to what to serve with or along side?
Hmmmm…. it’s really good with white rice, or mashed potatoes. Any kind of lighter green salad would be a good idea also. This casserole is a great choice! I hope you love it 😉
Yum, yum. Made it today. It’s delicious! Will make again for sure!
I’m so happy you loved it 🙂
I’ve tried it 4/5 times and every time it comes out great……. Has never let me down And now It has become a family favorite!
Thanks sooo much for a great recipe.
You’re so welcome and thanks for a great review 🙂
Made this the other night, actually, a double recipe because it looked soooo good…. I wasn’t disappointed. Because we wanted it served over pasta, (No Yolks Egg Noodles worked beautifully), I made it a little saucier by doubling, (or would it be quadrupling by now), the liquids. Also, to lighten it up, I substituted the half and half with milk and plain Greek yogurt. Came out so rich you’d never miss it! My husband has eaten it 4 times in two days! Great recipe.
I love the idea of adding milk and Greek yogurt. That’s brilliant! Thank you so much for sharing that healthy tip with me 🙂 I’m so glad you enjoyed the recipe 🙂
this was so good! amazing flavor. thanks!
Thank you for the great review :).
awesome
This was truly one of the easiest recipes I’ve ever made and had everyone LOVE it! Thank you so much for sharing!!
Elaine, thank you for the great review and you are welcome :).
Overall, this was very good. The chicken was moist, flavors melded, and was ready in said timeframe. However, I didn’t feel like this needed the flour/breaching. Next time, I will sautéed the chicken without the flour…actually, I feel like that step can be omitted altogether. I’d also like to try some wine or a more Alfredo-like sauce with this. Either way, I enjoyed and will make this again with a few modifications. Thank you for a good base recipe.
I’ve never tried it without dredging it in flour first. I know it helps to keep the chicken juicy and also helps the sauce thicken up nicely. If you try it, I’d love to know what you thought of it that way. Thanks 🙂
looks great
Holly Delicious Batman! This looks it will be a top favorite of mine! I love chicken and mushroom ANYTHING! Can’t wait to make this!!! Thanks for posting!
I’m so happy you loved it! Thank you Trisha 🙂
OHMYGOSH. This was so so so soooo delicious!! Thank you for sharing!
Awesome! I’m so happy you loved it! Thanks so much for the great review!