On low speed, mix peanut butter, butter and both sugars in the bowl of an electric mixer fitted with a paddle attachment, until incorporated.
On low speed, add eggs and vanilla and mix until just combined.
Add flour to the mixture, stirring on low speed. Add all the mini chocolate chips just before the flour is all incorporated. Mix until the dough collects around the paddle attachment.
Roll your dough between two sheets of parchment paper and chill in the fridge for at least one hour. For a post on cookie thickness, see here.
Cut your cookie shapes out and re-roll dough as needed.
Place cookie shapes at least 1/2 an inch or 1 cm apart on a baking sheet lined with parchment paper.
Place tray(s) of cookies in a fridge or freezer until thoroughly chilled; at least one hour.
Bake at 350 degrees Fahrenheit for approximately 8-12 minutes. Larger shapes will need more time and smaller shapes less. Look for slightly golden brown edges.
Once cookies have cooled, decorate as desired!
Notes
Yield: Approx. 30 cookies (depending on size and shape)