These are the BEST pistachio white chocolate cookies. They are everything a cookie should be–soft, chewy, and loaded with nutty pistachios and sweet white chocolate chips.
Whisk together the flour, baking soda, cornstarch, and salt in a medium-sized bowl and set it aside.
In the bowl of a standing mixer, beat the butter and sugars until light and fluffy, 3-4 minutes.
Add in the eggs and vanilla extract, mixing just until incorporated.
With mixer speed on low, add the dry ingredients into the batter, mixing until fully incorporated. Stir or fold in the white chocolate chips and chopped pistachios.
Scoop the dough using a medium cookie scoop—place dough balls on ungreased non-stick cookie sheets or parchment-lined trays, about 2-in apart.