01 -
Preheat the oven to 400 degrees Fahrenheit.
02 -
If using frozen chicken tenders, let them sit at room temperature for about 5 minutes to soften if you prefer to slice them first.
03 -
Spread the mashed potatoes evenly on the bottom of a 9 x 13-inch casserole dish. If the mashed potatoes are cold, warm them first.
04 -
Top the mashed potatoes with corn and cheddar cheese.
05 -
Slice the chicken tenders into pieces of the desired size and arrange them on top of the casserole.
06 -
Bake the casserole uncovered for 20 minutes if using frozen chicken tenders or 15 minutes if using homemade chicken.
07 -
Prepare the brown gravy on the stovetop as the casserole finishes baking.
08 -
Drizzle the desired amount of gravy over the casserole and serve immediately.