In a large mixing bowl, combine butter, sugars, peanut butter and vanilla until smooth.
Add egg until incorporated.
In a separate bowl, combine baking soda, baking powder, salt and flour. Incorporate dry ingredients into wet mixture until combined.
In a small bowl, combine brown sugar and salt. Roll a large dough ball {I use a medium cookie scoop}, break in half to add a melting wafer inside and then roll back into a ball.
Roll dough balls in the brown sugar and salt mixture and place on a parchment lined cookie sheet. Bake 8 minutes (or until golden brown at edges) and serve warm.
Notes
Rolling the cookie dough balls in brown sugar and sea salt give added texture, but you can skip this step if you'd like to save time.
For best results, don’t over-bake the cookies! They might not look done but will continue to bake on the sheet after removing them from the oven.
These chocolate peanut butter cookies are best served out of the oven. If you save them for later, warm them in the microwave for 20 seconds for blissful bites.