How to Make Flourless Oatmeal Cookies – Light Version Here is a cookie that you can have and not feel guilty about it! You can have these cookies that have only two ingredients. Can you imagine that? Yes, with only two ingredients you can bake the most delicious flourless oatmeal cookies. These two ingredients are: rolled oats and bananas. These cookies are really the best of things. If you are looking for something sweet to eat it that is easy and delicious and without guilt, here is your answer: Flourless Oatmeal Cookies. The most important of this simple recipe is to use over ripe bananas. The good news is that you now have an excuse to let your bananas over ripe The good news is that this recipe contains no egg, no butter, no sugar, no flour or milk. They are good for people allergic to gluten!