The invention relates to oatmeal cookie with their composition which mainly includes sugar (brown, golden), butter or margarine, eggs, salt, vanilla extract, baking soda, baking soda, gold medal flour, Quaker oats (uncooked), coconut and cinnamon. The product, when baked, provides a storage-stability, plurality of textures, a crisp texture, and chewy texture. This invention also provided a method for preparation of an oatmeal cookie comprising the steps of: (i) mixing of the dry ingredients and the eggs together in butter or margarine with the help of hands; (ii). Adding all remaining ingredients and roll into balls and flatten with fork in both directions; (iii) Filling the obtained product into a container.