Preheat oven to 350° FIn a medium bowl, add the peanut butter, egg, sugar, and vanilla extract.
Using a hand mixer, mix the ingredients until they are nicely combined and creamy looking. At this point, you may place the dough for a couple of hours in the fridge so it thickens up and easier to handle.
Line a sheet pan with parchment paper. Using a scooper or a spoon, scoop out about 1-inch of cookie dough. Using your hands roll them into a ball and place them on the sheet pan.
Repeat the last step until you have rolled all the dough and lined it up on the sheet pan. Space then out a bit.
Using a fork, press down and flatten each of the cookie balls in opposite directions to make a pattern. Place in the preheated oven and baked for 10-12 minutes or until they are golden crisp on the sides.
Remove the cookies from the oven and allow them to cool for about 3-5 minutes before transferring them to a rack or plate. Enjoy.
Notes
Makes about 12 cookies, the serving size is one cookie
Use creamy peanut butter
Once you mix the dough, you may place it in the fridge so the dough gets a bit thicker and easier to handle.
Allow the egg to reach room temperature.
The vanilla extract is optional but recommended
Allow the cookies to cool off completely before serving.