Preheat oven to 325 degrees and spray an 8x8
baking pan with baking spray.
Add butter and sugar to a stand mixer and cream on
high speed for 1-2 minutes until light and fluffy.
Lower speed to the lowest setting and add in the
flour slowly until just combined.
Press into baking pan then poke with fork.
Bake for 30-35 minutes (you do not want the
cookies to brown).
Cool about 10 minutes then cut into squares while
still slightly warm.