This simple dough can be used in a variety of recipes. To make the dough easier to work with, chill for 1 to 3 hours.
- In a large mixing bowl beat butter and shortening with an electric mixer on medium to high speed for 30 seconds. Add sugar, baking powder, and salt. Beat until combined, scraping sides of bowl occasionally. Beat in egg and vanilla until combined. Beat in as much of the flour as you can with the mixer. Stir in any remaining flour with a wooden spoon.