In a large bowl, add butter, powdered sugar, Stevia in the [email protected]
and flavorings. With an electric mixer, beat on low until combined, then turn up to medium and beat for 3 minutes. With mixer on medium low, gradually add flour and salt. Once the flour and salt are added, turn mixer up to medium and mix completely. With floured hands, knead dough for a minute and form into a ball (in the bowl).