In your mixer cream your butter then add in the peanut butter, sugar, brown sugar, egg, and vanilla and mix well.
In a separate bowl whisk together your flour, baking soda, and salt.
Add your dry ingredients to the peanut butter/sugar mixture and mix well.
Spray your cookie sheets with cooking spray. Roll your cookie dough into 1½ inch - 2 inch balls and space out evenly on your cookie sheets, (the size depends on how big or small you like your cookies).
Take your fork and flatten the cookies using a criss-cross pattern.
Bake for about 12-14 minutes. Just watch them because your time may vary depending on the size of your cookies.
Serve warm with a glass of milk!
Recipe by A Fireman's Wife at https://afiremanswife.com/2017/05/04/peanut-butter-cookies/