Easy Leftover Chicken and Potato Casserole

Leftover Chicken Casserole
The Spruce
  • Total: 50 mins
  • Prep: 15 mins
  • Cook: 35 mins
  • Yield: 4 servings
Nutritional Guidelines (per serving)
915 Calories
53g Fat
57g Carbs
52g Protein
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Nutrition Facts
Servings: 4 servings
Amount per serving
Calories 915
% Daily Value*
Total Fat 53g 68%
Saturated Fat 26g 128%
Cholesterol 193mg 64%
Sodium 1091mg 47%
Total Carbohydrate 57g 21%
Dietary Fiber 6g 22%
Protein 52g
Calcium 450mg 35%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

This chicken and potato casserole is easy to prepare with cooked leftover chicken and potatoes. This makes a nice everyday meal using the leftovers from a Sunday chicken dinner. Use a cooked rotisserie chicken and cook the diced potatoes separately.

This easy chicken casserole can be topped with a cup of shredded cheddar cheese or a crunchy buttered bread crumb topping. Crushed French fried onions would be delicious as well.

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Ingredients

  • 3 tablespoons butter
  • 8 ounces mushrooms (sliced)
  • 1 cup onions (chopped)
  • 2 tablespoons all-purpose flour
  • 1 cup milk (or half-and-half)
  • Kosher salt 
  • Freshly ground black
  • 2 cups diced chicken (cooked)
  • 2 cups diced potatoes (cooked)
  • Optional: 1 cup soft bread crumbs
  • Optional: 2 tablespoons melted butter
  • Optional: 1 cup cheddar cheese (or Monterey Jack cheese, shredded)

Steps to Make It

  1. Gather the ingredients.

    Ingredients for leftover chicken casserole
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  2. Heat the oven to 350 F / 180 C / Gas 4.

  3. Lightly butter a 1 1/2-quart baking dish.

    Casserole dish
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  4. Heat butter in a large, heavy skillet or sauté pan over medium heat.

  5. Add the mushrooms and onions and cook until tender and lightly browned, about 8 minutes.

    Sauteing the onions and mushrooms
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  6. Stir the flour into the pan. Cook, stirring, for 1 to 2 minutes.

    Adding flour to the saute pan
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  7. Gradually add the milk or half-and-half, stirring, and cooking until thickened. Add salt and pepper, to taste.

    Adding milk to the saute pan
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  8. In the prepared baking dish, combine chicken, potatoes, and mushroom sauce mixture. 

    Chicken, potatoes, and mushroom in a baking dish
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  9. Toss the bread crumbs with melted butter until well coated.

    Bread crumbs with melted butter
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  10. Top with the buttered bread crumbs or sprinkle with shredded cheese.

    Casserole with cheese ready to be baked
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  11. Bake for 25 to 30 minutes, or until hot and bubbly.

    Leftover Chicken and Potato Casserole Recipe
     The Spruce

Recipe Variations

  • Other cooked vegetables may be used along with the potatoes. Add 1/2 cup or more of diced cooked rutabaga or carrots either in place of or in addition to the mushrooms.