heat oven to 325, spread parchment paper on bottom of rimmed cookie sheet, with a few inches over hanging each side (this will help you lift the GC (giant cookie) out of the pan
cream butter and sugar
whisk flours, salt and baking soda in a seperate bowl
add eggs and mix after each one until combined with the butter and sugar. add vanilla
mix in flour mixture until well combined
color half the dough one color if desired and press into cookie sheet- you might need to roll it out between two sheets of parchment paper and then press and shape. repeat with rest of dough
bake for 15-18 minutes- the whole cookie will feel firm, you might need to cover edges with foil and rotate. the cookie needs to be firm with no wet spots.
let it cool in the pan