Preheat the oven to 375°F (190°C).
In a large bowl, beat the 1/2 cup granulated sugar, brown sugar, peanut butter, butter, and egg until smooth.
Stir in flour, baking soda, baking powder, and salt until a dough forms.
Shape dough into 1-inch balls. Roll each in additional granulated sugar, coating evenly.
Place on an ungreased cookie sheet, spaced about 2 inches apart.
Bake in preheated oven for 8-10 minutes, or until edges are light brown.
Immediately press a chocolate kiss into the center of each cookie.
Move cookies to a wire rack to cool completely.