How to Make Cheesy Chicken and Mashed Potato Casserole

Warm, creamy, and loaded with cheesy goodness, this Cheesy Chicken and Mashed Potato Casserole brings all the comfort of a classic home-cooked meal—with a lightened-up twist. It’s hearty, satisfying, and made with simple ingredients, making it a perfect weeknight dinner or cozy meal prep option. With tender chicken, smooth mashed potatoes, and a golden cheesy topping, this casserole is a crowd-pleaser that fits into a balanced lifestyle.

Why You’ll Love This Recipe

Comforting Classic: All the textures and flavors of your favorite casserole, made better-for-you.
One-Dish Wonder: Everything bakes together in one dish—easy prep, easy cleanup.
Protein-Packed: Made with lean chicken breast and loaded with flavor.
Make-Ahead Friendly: Great for meal prep or freezing for later.

Ingredients

For the Chicken Layer:

• 2 cups cooked, shredded chicken breast
• 1/3 cup plain nonfat Greek yogurt
• 1/2 cup reduced-fat shredded cheddar cheese
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• Salt and pepper to taste

For the Mashed Potato Layer:

• 3 cups mashed potatoes (made with light butter and skim milk)
• 1 tablespoon light butter
• 1/4 cup skim milk (adjust for desired creaminess)
• Salt and pepper to taste

For the Topping:

• 1/3 cup reduced-fat shredded mozzarella or cheddar cheese
• Optional: chopped fresh parsley or green onions for garnish

Instructions

Prepare the Mashed Potatoes:

• In a mixing bowl, combine mashed potatoes with light butter, skim milk, salt, and pepper.
• Stir until creamy and well combined. Set aside.

Mix the Chicken Layer:

• In another bowl, combine shredded chicken with Greek yogurt, shredded cheddar, garlic powder, onion powder, salt, and pepper.
• Mix until evenly coated and creamy.

Assemble the Casserole:

• Preheat oven to 375°F (190°C).
• Lightly spray a 9×9-inch baking dish with cooking spray.
• Spread the chicken mixture evenly in the bottom of the dish.
• Spoon the mashed potatoes over the chicken layer and smooth the top.
• Sprinkle the remaining shredded cheese over the potatoes.

Bake and Serve:

• Bake uncovered for 25–30 minutes or until heated through and cheese on top is melted and slightly golden.
• Garnish with chopped parsley or green onions, if using.
• Serve warm with a side salad or steamed veggies.

Nutritional Information (Per Serving, Approximate)

• Calories: 290
• Carbs: 19g
• Protein: 28g
• Fat: 11g
• Fiber: 2g
• Sugar: 2g

Tips for Success

• Use Pre-Cooked Chicken: Rotisserie or leftover grilled chicken works great to save time.
• Don’t Overmix Potatoes: To avoid gummy mashed potatoes, stir just until smooth.
• Add Veggies: Stir in some steamed broccoli or peas for extra nutrition.
• Make It Ahead: Prepare the casserole up to a day in advance and bake when ready.

Why This Recipe Works

• Creamy Yet Light: Greek yogurt keeps it creamy without heavy cream.
• Satisfying & Balanced: Protein, carbs, and fat all come together in one comforting dish.
• Kid-Approved: The cheesy topping and mashed potatoes make this a family favorite.
• Versatile: Swap proteins, add vegetables, or play with cheese blends for variety.

Cheesy Chicken and Mashed Potato Casserole is the ultimate comfort food made lighter and better for everyday eating. With its creamy layers, gooey cheese, and hearty chicken, it’s a dish that delivers on both taste and nutrition. Whether you’re feeding the family or prepping for the week, this casserole is sure to hit the spot!