Preheat your oven to 375° F.
Add the vanilla extract and egg. Mix everything together.
Add the peanut butter, baking soda, salt and stir to combine well.
Finally add the flour and chocolate chips and mix together.
Using a greased cookie sheet to bake the cookies, drop small amounts of the cookie dough onto the sheet. Using a fork or spoon, flatten the dough slightly.
Bake the cookies for about 5 minutes until the edges just start to turn brown being careful not to overcook.
When the cookies are done, remove them from the oven and let them cool for 10 minutes before transferring them to a cooling rack.