Heat oven to 350 degrees F. Beat butter and both sugars with mixer until cramy. Add egg whites, apple sauce, vanilla and beat well. Combine flour, baking soda, salt and cinnamon together; add to wet ingredients; mix well. Add oats and any optional ingredients; mix well. Place by the tablespoon evenly spaced on ungreased baking sheet. Bake 8-10 minutes until light golden brown. Cool & Enjoy!