Arrowroot Biscuits

Step 1
Preheat oven to 350 degrees F (175 degrees C). Grease baking sheets or line with parchment paper.

Step 2
Beat butter and sugar just until smooth. Beat in egg and vanilla.

Step 3
Combine flour, arrowroot flour, baking powder, and salt. Add to butter mixture and mix well. Divide dough in half.

Step 4
On a lightly floured surface, roll half the dough out 1/8 inch thick. Cut into 2 1/2-inch rounds. Transfer rounds to prepared baking sheet; prick with fork. Repeat with remaining dough.

Step 5
Bake in preheated oven until edges are golden brown, 8 to 10 minutes. Allow a bit more baking time if rolled thicker.