Preparation

1. Cream together butter, margarine, sugar, and vanilla extract. In another bowl combine remaining ingredients. Add dry ingredients to wet and mix until crumbly mixture forms.
2. Knead for 1 minute before forming into a disk. Wrap with plastic wrap and refrigerate for 15-30 minutes.
3. Preheat oven 350˚F. Roll out dough onto floured work surface to 1/4" thickness. Cut into 24 rectangles, reforming and re-rolling dough scraps if needed. Or use a 2"-long rectangle or square cookie cutter.
4. Placed on lined baking sheets and bake for 12-14 minutes, rotating pans halfway through baking. Transfer to wire rack to cool completely.