With a mixer or by hand, cream the butter and sugar. Add both eggs, and continue to mix until incorporated. Add the baking soda, salt, vanilla, and 2 cups all purpose flour, mixing until dough forms.
Divide the dough evenly into three bowls. To the first bowl, the sugar cookie bowl, add 2 tablespoons all purpose flour and mix well.
To the second bowl, the chocolate cookie bowl, add the Dutch processed cocoa powder and mix until incorporated.
To the third bowl, the peanut butter sugar cookie bowl, add the 2 tablespoons all natural peanut butter +1 tablespoon all-purpose flour and mix until incorporated.
Going bowl by bowl, scoop cookie dough out in 2 tablespoons balls, roll in granulated sugar, and place on a cookie sheet. Bake at 375° for 8-10 minutes.
While the cookies are baking, unwrap your Hershey kisses. As soon as the cookies come out of the oven, gently press a Hershey kiss of your desired flavor into the middle of each cookie. Allow to cool completely. You may remove cookies to a wire rack to cool instead of leaving them on the baking pan, but be cautious as the kisses melt a bit before hardening up again as the cookies cool. Store in an airtight container at room temperature for up to four days. Enjoy!