Melt the butter until soft but not all the way melted. About 45 seconds. Hand mix the butter and sugar until well mixed. Add egg and extract until integrated - don't over mix it. Add flour, baking soda & salt. Mix until everything is incorporated. Add chips & pistachios and mix just enough until mixed well in the batter. Form medium sized rounds or large sized depending on how big you want your cookies to be. Bake for 10 minutes.