Suppose you are extreme hungry but you have no one to cook something for you or you are a qualified cook then you have very less ingredients with you. What will you do, I personally would pick my bike and head to a near-by restaurant as soon as possible to endure my hunger but what if I tell you we have got a perfect substitute for you. Here comes "Flourless Peanut Butter Mug Cake", Well it's usually been called as three ingredient Flourless Peanut Butter Mug Cake. Why?? since it can be prepared just by using 3 common ingredients which lasts long in out monthly ration. The cake is peanut buttery, but also its very light and fluffy. You won't believe that it's flourless yeah you read it right. You just need to manage peanut butter, eggs and sugar. Lets jump into the simple recipe of it.