Oatmeal is often added for both nutritional benefits and for texture in what it is added to. Experts tell us that oatmeal can help with blood pressure and with blood sugar. It can also help make you feel full as it takes a bit of time to digest. When it comes to cookies, oatmeal adds a great taste to a cookie such as this one. Also, oatmeal also helps to retain the moisture in this cookie while baking, resulting in a chewy and moist cookie.