Certainly! The “signature” look of an iced oatmeal cookie is that craggy-looking top, and dipping the cookies is what helps create this look. The icing clings to the bumps on the cookie but doesn’t sink into the cracks. However, if spooning or spreading the icing works better for you, go for it! The cookies will have a slightly different look but taste just as fantastic. The icing recipe is enough to ice all the cookies this way. If you dip them, you may have some leftover icing.