Preheat the oven according to the cookie package's instructions. Line a baking sheet with parchment.
Roll cookie dough into one-inch balls. (If using break-and-bake dough, roll each piece into a ball.)
Pour sugar into a small bowl or shallow plate. Roll each dough ball in the sugar, coating it entirely. Bake the cookies according to the package's instructions. As the cookies bake, unwrap the Hershey's Kisses and set aside.
Let the cookies cool for three to four minutes. Top each with a Hershey's Kiss in the center; it may melt slightly, but they'll solidify once the cookies fully cool.
