How To Roll Biscotti Dough In Nuts The following pictures are here to provide a visual guide in How To Roll Biscotti Dough In Nuts. Click on an image to enlarge it and read its caption. Decorating biscotti with nuts starts when rolling the dough. Divide your dough into equal halves and form each section into a ball. Pile 1/6 cup/40 milliliters of nuts at the center of your cookie sheet. (PSST — Ignore the dough ball that has already been rolled into a plain log.) Roll one of the dough balls on the nuts into a cylinder 8 to 10 inches/20 to 25 centimeters long. Repeat this with the other dough ball. Position the nut-covered dough cylinders parallel to one another lengthwise on a baking sheet. Using the heel of your hand, gently press each cylinder into a 1 inch/2.5 centimeters thick loaf.