Deep-Dish Chocolate Chip Cookie for One

unsalted butter, at room temperature

unrefined granulated sugar, such as evaporated cane juice

packed light brown sugar

beaten egg, preferably organic (cover & chill remaining beaten egg for tomorrow’s cookie cup… you will be making another one!)

tiny splash pure vanilla extract

whole wheat pastry flour

baking soda

tiny pinch salt

heaping 1 Tbsp grain-sweetened chocolate chips, such as Sunspire