This creamy, comforting Chicken Mushroom Rice Casserole is made with boneless chicken breasts, fresh mushrooms, and long-grain white rice, ready in just 60 minutes. The golden, bubbling cheese crust breaks open to reveal perfectly cooked rice swimming in a rich, savory sauce. I love how this one-pan wonder brings my family running to the dinner table on busy weeknights.
Why This Classic Works
I used to struggle with rice casseroles turning out either too mushy or painfully crunchy. The trick I finally learned is to use the exact ratio of liquid to long-grain rice and cover the pan tightly to trap the steam.
Searing the chicken and mushrooms first develops a deep, savory flavor that boiling simply cannot achieve. It takes an extra five minutes of prep work, but I promise the rich results are entirely worth the effort.
Chicken Mushroom Rice Casserole Ingredients
- 1 lb boneless skinless chicken breasts, diced
- 8 oz cremini mushrooms, sliced
- 1 cup long-grain white rice, uncooked
- 1 medium onion, diced
- 3 cloves garlic, minced
- 2 tbsp butter
- 1 can (10.5 oz) condensed cream of mushroom soup
- 1 1/2 cups chicken broth
- 1 tsp dried thyme
- 1 cup shredded cheddar cheese

How To Make Chicken Mushroom Rice Casserole
- Sear the Chicken: Preheat your oven to 375F (190C). Melt butter in an oven-safe skillet over medium-high heat, then brown the diced chicken for 5 minutes.
- Cook the Veggies: Add the diced onion and sliced mushrooms to the skillet. Saute for 5 to 7 minutes until the mushrooms are browned and the liquid evaporates.
- Stir in the Base: Add the minced garlic and thyme, cooking for 1 minute until fragrant. Stir in the uncooked rice, cream of mushroom soup, and chicken broth until smooth.
- Bake the Casserole: Cover the skillet tightly with foil or an oven-safe lid. Bake in the preheated oven for 35 minutes until the rice absorbs most of the liquid.
- Melt the Cheese: Remove the foil, sprinkle the cheddar cheese over the top, and bake uncovered for 5 more minutes until the cheese is melted and bubbling.


Recipe Tips
- Rinse the rice: Washing your rice under cold water removes excess starch, preventing the casserole from becoming gummy.
- Seal it tight: A tight foil seal traps steam inside the pan, which is crucial for cooking the rice evenly.
- Brown the mushrooms: Letting the mushrooms get a hard sear before adding liquid builds an incredible depth of savory flavor.
What To Serve With Chicken Mushroom Rice Casserole
A crisp green vinaigrette salad cuts through the richness of the creamy sauce perfectly. Roasted green beans or simple steamed broccoli also make excellent vegetable sides to round out the meal.

How To Store
Store leftover casserole in an airtight container in the fridge for up to 4 days. You can also freeze it for up to 3 months, though the rice may soften slightly upon reheating.
FAQs
Can I use brown rice instead of white?
Yes, but brown rice requires more liquid and a longer cooking time. You will need to add about 1/2 cup extra broth and bake for 60 to 75 minutes.
Can I use chicken thighs?
Absolutely. Boneless, skinless chicken thighs stay incredibly tender and add a richer flavor to the overall dish.
Do I have to use canned soup?
No. You can substitute the canned soup with an equal amount of homemade thick cream sauce flavored with mushroom broth and seasonings.
Why did my rice stay crunchy?
Crunchiness usually means the steam escaped during baking or there was not enough liquid. Ensure your foil is tightly sealed around the edges next time.
Nutrition
- Calories: 420 kcal
- Total Fat: 18 g
- Saturated Fat: 8 g
- Cholesterol: 95 mg
- Sodium: 650 mg
- Total Carbohydrate: 35 g
- Protein: 28 g
Try More Recipes:
- Chicken Teriyaki Casserole Recipe
- Chicken Alfredo Tater Tot Casserole
- French Onion Chicken Noodle Casserole
Chicken Mushroom Rice Casserole
6
servings15
minutes45
minutes1
hourCreamy, comforting Chicken Mushroom Rice Casserole features tender diced chicken breasts, fresh cremini mushrooms, and fluffy white rice all baked in 60 minutes. This classic one-pan dinner makes the perfect cozy weeknight meal for the whole family.
Ingredients
1 lb boneless skinless chicken breasts, diced
8 oz cremini mushrooms, sliced
1 cup long-grain white rice, uncooked
1 medium onion, diced
3 cloves garlic, minced
2 tbsp butter
1 can (10.5 oz) condensed cream of mushroom soup
1 1/2 cups chicken broth
1 tsp dried thyme
1 cup shredded cheddar cheese
Directions
- Sear the Chicken: Preheat your oven to 375F (190C). Melt butter in an oven-safe skillet over medium-high heat, then brown the diced chicken for 5 minutes.
- Cook the Veggies: Add the diced onion and sliced mushrooms to the skillet. Saute for 5 to 7 minutes until the mushrooms are browned and the liquid evaporates.
- Stir in the Base: Add the minced garlic and thyme, cooking for 1 minute until fragrant. Stir in the uncooked rice, cream of mushroom soup, and chicken broth until smooth.
- Bake the Casserole: Cover the skillet tightly with foil or an oven-safe lid. Bake in the preheated oven for 35 minutes until the rice absorbs most of the liquid.
- Melt the Cheese: Remove the foil, sprinkle the cheddar cheese over the top, and bake uncovered for 5 more minutes until the cheese is melted and bubbling.
