Chicken and Mashed Potato Casserole

Name: Chicken and Mashed Potato Casserole
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: 4 cups mashed potatoes, store-bought or homemade ((I used a 32 ounce container of store-bought mashed potatoes)); 1 teaspoon garlic powder; Salt and pepper ((to taste)); 1 (11 ounce) can fresh or frozen corn ((or roughly one cup)); 1 (12 ounce) can fresh or frozen green beans ((or roughly one cup)); 3 cups cooked, shredded chicken; 1 (12 ounce) jar brown gravy

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by Gayle on February 10, 2025 0 comments »

This Chicken and Mashed Potato Casserole is the ultimate comfort food that’s perfect for busy weeknights. Made with creamy mashed potatoes, tender chicken, and a savory mix of canned veggies, this dish is ready in just 30 minutes!

You’ll also love this Creamy Ranch Chicken and Chicken and Noodle Casserole!

casserole in a white dish with a wooden spoon

If you’re struggling with what to serve for weeknight dinners, this easy chicken casserole is a great meal for the whole family.

The base of this casserole is a layer of buttery, fluffy mashed potatoes (yes, the store-bought kind for extra convenience).

Then comes a layer of sweet corn and green beans for the vegetables, followed by some seasonings, shredded chicken, and a tasty brown gravy to finish it off.

Once baked, the flavors meld together into a warm and satisfying dish that tastes like it took hours to prepare.

Serve this casserole on its own or pair it with a crisp green salad or dinner rolls for a meal that’s simple, hearty, and oh-so comforting.

Why You’ll Love This Recipe:

Quick and Easy: By using store-bought mashed potatoes, rotisserie chicken, and canned veggies, this recipe comes together in minutes.
Family-Friendly: Kids and adults will love the hearty texture and delicious taste of this creamy chicken and potato casserole.
Comfort Food: This dish is warm, hearty, and cozy….my definition of comfort food perfection.
Customizable: You can use a different kind of chicken, swap the veggies, or add in some cheese…the possibilities are endless.
Easy Clean-up: Just layer everything in one dish, bake, and serve…there is little cleanup, which means less time in the kitchen and less dishes to wash.
Great Leftovers: This casserole dish makes tasty leftovers and reheats well.

Ingredients Needed for Mashed Potato and Chicken Casserole:

Mashed Potatoes: I used my favorite store-bought variety, but you can use homemade or instant potatoes if you prefer.
Canned Veggies: Green beans and corn taste delicious in this easy casserole recipe, but you can also use frozen veggies.
Chicken: Shredded rotisserie chicken is perfect for convenience, but frozen or grilled chicken also works.
Seasonings: Garlic powder, salt, and black pepper gives this dish added flavor.
Gravy: Brown gravy works best, but any kind will work.

mashed potatoes with seasonings on the bottom of a white dish

green beans and corn layered on top of mashed potatoes in a white dish

How to Make:

Preheat: Lightly grease a baking dish with cooking spray and preheat your oven to 400℉.
Layer: Spoon the mashed potatoes in an even layer into the prepared baking dish, followed by the veggies, seasonings, and chicken. Drizzle the gravy over the top of the chicken mixture and cover with aluminum foil.
Bake: Place the baking pan into the oven and bake for 20-25 minutes, or until heated through.

chicken layered on top of green beans and corn in a white dish

brown gravy poured over chicken in a white dish

Can I Make This Ahead of Time?

Absolutely! You can assemble everything up to two days in advance and then bake as directed, adding on a few more minutes of cooking time since the casserole will be cold from the refrigerator.

How to Store:

Leftovers will keep in an airtight container in the refrigerator for up to four days. Alternatively, you can wrap the baking dish in plastic wrap and store in the refrigerator.

To Reheat: Place into the oven and bake at 375℉ for 20-30 minutes, or until warmed through. You can also reheat individual portions in the microwave.
To Freeze: Place casserole into a freezer-safe container and freeze for up to three months. When ready to serve, let thaw completely in the refrigerator.

casserole on a white plate with a gold fork

Variations of Chicken Mashed Potatoes Casserole with Gravy:

Here are some creative ways to customize this dish to meet your needs:

Protein Swaps: In place of the chicken, use some shredded or ground turkey, ground beef, or ground sausage for a different taste. You could also use boneless, skinless chicken breasts or thighs in place of rotisserie chicken.
Make it Vegetarian: Skip the meat and load up on more veggies for a vegetarian potato casserole.
Use Different Vegetables: Swap the canned or frozen veggies for roasted or sautéed carrots, asparagus, broccoli or cauliflower.
Mashed Potato Upgrades: Make potatoes from scratch; use leftover mashed potatoes; use scalloped potatoes; and/or stir in some cheese for an extra boost of flavor.
Make a Creamy Sauce: Instead of brown gravy, use a white cream sauce/gravy or cream of chicken soup, Alfredo sauce or pesto.
Toppings: Sprinkle the casserole with shredded cheddar cheese, mozzarella cheese, fresh herbs, crunchy onion straws, or crushed croutons for an extra kick of flavor.

What to Serve with Mashed Potatoes and Chicken Casserole:

Since this casserole is a meal in itself, i like to keep things simple and serve it with some garlic bread or a green salad.

casserole in a white dish with a piece removed to show the filling

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