Too much flour is usually the cause of dry and crumbling dough or baked cookies. It can also occur if the dough has been overworked during mixing. To prevent this:u003cbr/u003e-Weigh your flour and mix it in gently to the butter and sugar. u003cbr/u003e-Avoid kneading or rerolling dough frequently. u003cbr/u003e-Lightly flour any work surface if you're rolling and cutting cookies to avoid extra flour absorption.