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Baked chicken squash casserole in a glass dish with a golden stuffing crust.

Chicken Squash Casserole

Tender chicken and sliced yellow squash are baked in a creamy mushroom sauce and topped with a buttery stuffing crust.
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Course Main Course
Cuisine American
Servings 6 servings

Ingredients
  

  • 3 cups cooked chicken shredded, about 1.5 lbs / 680g
  • 2 lbs yellow squash cut into 1/4-inch slices, 900g
  • 1/2 cup chicken broth 120ml
  • 2 large carrots shredded
  • 1 medium yellow onion chopped
  • 1 cup sour cream 240g
  • 1 can cream of mushroom soup 10.5 oz / 298g
  • 1/2 tsp kosher salt
  • 1/4 tsp black pepper
  • 1 cup dry chicken flavor stuffing mix 115g
  • 1/4 cup unsalted butter melted, 55g

Instructions
 

  • Preheat your oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish with nonstick cooking spray.
  • In a large pot or Dutch oven, bring the chicken broth to a gentle simmer over medium heat. Add the sliced yellow squash and cook for 8 minutes until it begins to soften.
  • Drain the squash well to remove excess moisture and transfer it to a large mixing bowl. Add the shredded carrots, chopped onion, and shredded cooked chicken. If you are cooking raw chicken for this step, ensure it reaches a safe internal temperature of 165°F (74°C) before shredding.
  • In a separate smaller bowl, stir together the sour cream, cream of mushroom soup, kosher salt, and black pepper until smooth.
  • Pour the soup mixture over the chicken and vegetables. Stir gently until all the ingredients are evenly coated.
  • Spoon the mixture into the prepared baking dish and spread it into an even layer.
  • In a small bowl, toss the dry stuffing mix with the melted butter until the crumbs are moistened. Sprinkle this mixture evenly over the top of the casserole.
  • Bake uncovered for 25 minutes, or until the edges are bubbly and the stuffing is golden brown. Let the casserole rest for 5 minutes before serving.

Notes

Food safety: Always cook poultry to a safe internal temperature of 165°F (74°C) as measured by a meat thermometer.
If your squash releases a lot of water after boiling, pat it dry with a paper towel before mixing it with the other vegetables to prevent a watery sauce.
You can use leftover roasted chicken, store-bought rotisserie chicken, or quickly poach chicken breasts for this recipe.
Keyword chicken casserole, chicken squash casserole, comfort food, easy dinner, yellow squash