preheat the over to 350˚
butter and 8x8 pan and then line with parchment, lightly butter again, be sure to leave the edges of the parchment up and out of the pan to help get the cookie out of the pan, set aside
with an electric mixer or a stand mixer fitted with a paddle attachment ream the butter and sugar until light at fluffy
add the egg, beat well
add the vanilla beat again
mix the remaining dry ingredients together in a separate bowl
mix the flour mixture into the wet ingredients on low speed just until combined, scrape down the bowl with a rubber spatula, stir again, don't beat the dough after adding the flour
pat out the cookie dough in the prepared pan
mix the sugar (or brown sugar if you like) and cinnamon for the topping and sprinkle the cinnamon-sugar mixture over the top of the cookie
bake 25-30 minutes or until baked and golden brown
cool in the pan on a wire rack
when cool remove using the extra parchment or foil
cut and serve