Summarize:

Beat the ingredients with either a handheld mixer or a stand mixer fitted with a paddle attachment. Set your mixer at medium speed and beat until the ingredients are light and fluffy.
Combine the sugar, butter and cream cheese in a mixing bowl. Add the egg yolk and the extracts to the bowl and beat them for another 30 seconds. Whisk together the flour and kosher salt in a separate bowl. Add 1 cup of the dry ingredients to the wet ingredients and beat it at low speed until the dry ingredients are just incorporated. Continue adding the dry ingredients in 1-cup increments and mixing until they are well combined. Cover the mixing bowl that contains the dough with plastic wrap. Place the dough into the refrigerator and chill it for 8 hours or overnight.