In a mixer, combine melted butter or margarine, brown sugar, white sugar, and eggs. Beat until creamy. Add vanilla, baking soda, baking powder, oatmeal and beat. Add corn flakes, coconut and slowly add flour. Beat with mixer. Add nuts if you wish, then beat. On a greased cookie sheet, drop one heaping teaspoonful of batter per cookie. Bake at 350 degrees for 10-12 minutes until lightly brown. Don't eat too many at one time!