Mix the dough for these the day before you want to bake them so it can rest overnight in the fridge.
Whisk together the flours, baking powder, baking soda and salt in large bowl.
Place 1 stick of butter in a small sauce pan and heat over medium, swirling it, as it foams and settles, until you see browning golden bits in the bottom. Swirl and allow to brown a little but don't burn it or it will be bitter. Pour into a stand mixer and add the remaining stick and half of butter, along with the sugars and vanilla.
Mix this on medium high until it is smooth and starting to get fluffy. Add the eggs, one at a time and mix until combined. Turn mixer on medium high and whip until fluffy again. Add in flour mix and mix on low just until barely combined. Mix in the chocolate chips. Place dough into plastic wrap and put into the fridge overnight.
When ready to bake, heat oven to 350 and line baking sheets with parchment. Form balls about 2 oz (large golf ball size). The original recipe is for 3.5 oz balls, which makes really big cookies, but I like to make them a bit smaller. Place 6 on a sheet and bake for 10 minutes (or longer if doing larger size), rotating sheets half way through. The cookies should be starting to slightly brown but you don't want to overbake them. Sprinkle with seat salt while hot. Cool on the sheet for a few minutes, then transfer to a rack. These are fantastic warm.