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Grandma’s Cozy Sunday Baked Chicken Casserole

A warm and comforting baked chicken casserole filled with tender chicken, colorful vegetables, creamy sauce, and melted cheddar cheese. A buttery cracker topping bakes until golden and crisp, making this an easy family dinner with classic homemade flavor.
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Ingredients Method Notes

Ingredients
  

  • 3 cups cooked chicken shredded or diced
  • 1 can 10.5 ounces condensed cream of chicken soup
  • 1/2 cup sour cream
  • 1/2 cup chicken broth
  • 1 1/2 cups frozen mixed vegetables thawed and drained
  • 1 cup shredded cheddar cheese
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon dried thyme
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon salt or to taste
  • 1 cup crushed buttery crackers
  • 3 tablespoons unsalted butter melted
  • 2 tablespoons chopped fresh parsley optional

Method
 

  1. Preheat the oven to 375°F. Lightly grease a 9-by-13-inch baking dish.
  2. In a large mixing bowl, combine the cream of chicken soup, sour cream, and chicken broth until smooth.
  3. Stir in the garlic powder, onion powder, thyme, black pepper, and salt.
  4. Add the cooked chicken, thawed mixed vegetables, and shredded cheddar cheese. Stir gently until everything is evenly coated.
  5. Spread the chicken mixture evenly in the prepared baking dish.
  6. In a small bowl, combine the crushed buttery crackers with the melted butter until the crumbs are evenly coated.
  7. Sprinkle the buttery cracker mixture evenly over the casserole.
  8. Bake uncovered for 25–30 minutes, or until the filling is hot and bubbling around the edges and the topping is golden brown.
  9. Remove from the oven and let the casserole rest for 5–10 minutes before serving. Garnish with fresh parsley, if desired.

Notes

  • Store leftover casserole in an airtight container in the refrigerator for up to 3–4 days. Reheat individual portions in the microwave or warm larger portions in a covered baking dish in the oven.
  • For a different flavor, substitute mozzarella, Monterey Jack, or Colby Jack for the cheddar. You can also replace the mixed vegetables with broccoli, peas, green beans, carrots, or a combination your family enjoys.
  • Leftover turkey works well in place of chicken, making this casserole especially useful after a holiday meal. For the crispiest topping, store leftover cracker crumbs separately when possible and add fresh crumbs before reheating.