Step 1

Grease a 9X13 inch baking dish with butter. Spray a piece (large enough to cover the baking dish) of aluminum foil with cooking spray. Place on counter sprayed side up; set aside.

Step 2

Preheat oven to 400°F (204°C).

Step 3

Spread the prepared mashed potatoes (6 cups) in an even layer in the buttered baking dish.

Step 4

Sprinkle the heated corn (8 ounces) evenly over the mashed potatoes.

Step 5

Sprinkle the heated chicken (26 ounces) in an even layer over the corn.

Step 6

Evenly sprinkle the cheese (2 cups) over the chicken.

Step 7

Cover the casserole dish with prepared foil and bake in preheated oven until the cheese has melted and the ingredients are heated through.

Step 8

Remove from oven, pour gravy (1 jar) over top of the casserole, return to oven uncovered, and continue to bake another 7-10 minutes. Remove from oven, sprinkle with parsley if using, and serve!