Preheat the oven to 375 degrees, line a couple of baking sheets with parchment paper and set aside
In a bowl, combine the flour, salt and baking soda, and set aside.
In a large bowl, cream together the butter, brown sugar and granulated sugar, add the egg, peanut butter and vanilla and mix everything well.
Add the dry ingredients and mix just enough to incorporate all the ingredients together, add in the chocolate chips.
Using a small ice cream scoop, drop the dough onto the parchment-lined baking sheet and flatten each one with either your fingers or a fork.
Bake for about 9 to 10 minutes or until the edges are lightly golden.
Let them cool for 5 minutes on a baking sheet and then transfer them to a wire rack to cool them completely.