Mix oil, sugars, vanilla and eggs. Add the flours, baking powder, baking soda, oatmeal and Bran Flakes. Mix well. Batter will be sticky. Flour your hands and roll into 1-inch balls (go easy on the flour on your hands or your cookies will come out dry). Bake on ungreased cookie sheet at 350 degrees for 8 to 9 minutes. Makes about 87 cookies.
Do not overbake - cookies should be chewy in the middle.