Coconut Cream Pie

3/4 cup sugar

1/4 cup cornstarch

1 cup evaporated milk

1 cup hot water

3 egg, separated

1/2 stick butter

1 cup coconut

1 tsp. vanilla

Mix all dry ingredients first, then add a little of the evaporated milk to wet the dry ingredients. Add 3 egg yolks and beat good. Add remainder of the evaporated milk and hot water. Cook over medium heat stirring constantly. When thickened, remove from heat stir in butter, coconut and vanilla. Pour into cooked pie shell. Cool and top with cool whip.