Preheat oven to 350 degrees

Line 2 baking sheets with silicone or parchment paper or make one sheet and freeze dough for later use

In the bowl of an electric mixer fitted with a paddle attachment cream together butter, granulated sugar and brown sugar until combined

Mix in peanut butter then blend in egg and vanilla.  With mixer set on low add in flour mixture and mix just until combined

Scoop dough out and shape into balls then place on prepared baking sheet 2 inches apaprt

Using a fork flatten cookies then turn fork in opposite direction and flatten slightly

Bake one sheet at a time for 9 minutes

Let cool on the baking sheet 5 minutes then transfer to plate to cool completely