Mix the butter and peanut butter in a bowl until smooth.

Add the granulated sugar, brown sugar, baking soda, and baking powder to the butter mixture and mix until well combined.

Add the egg and vanilla, and mix well.

Gradually add the flour to the mixture and mix until smooth.

Let the dough rest for 30-45 minutes.

Preheat the oven to 375°F. Shape the dough into small balls, roll them in granulated sugar, and place them on a baking sheet lined with parchment paper. Flatten them with a fork.

Bake the cookies at 375°F for 7-10 minutes.