Best Ever Chicken Casserole

Preheat oven to 350 degrees F (175 degrees C).

In a large pot boil the chicken until tender. Cut the breasts into cubes or small pieces.

In a large bowl combine the chicken pieces with the water chestnuts onion soup most of the crushed corn flakes and mayonnaise. Mix well.

Pour mixture into a 9x13 inch baking dish. Sprinkle the rest of the crushed corn flakes on top of the mixture. Bake in the preheated oven for 1 hour.