Quick and Easy Chicken Pie

2 cups finely chopped cooked chicken or turkey
2 cups chicken gravy
2 cups mashed potatoes
1 cup shredded cheddar cheese
1/2 cup diced onion
1/2 cup diced celery
1 - 16 ounce can or yellow corn with liquid
1 tablespoon vegetable oil

In a frying pan, heat the oil and saute chicken, celery and onion until light brown. Add gravy, corn and corn liquid and mix well.

Press potatoes into a well greased 3 quart casserole dish. Cover with chicken mixture. Sprinkle with cheddar cheese and bake at 350 degrees for one hour.