In the bowl of an electric mixer fitted with the paddle attachment, beat together butter and sugar on medium speed for about 3 minutes or until light and fluffy.
Add vanilla and egg.
Gradually add flour and beat until well incorporated. Transfer dough to a pastry bag fitted with a star or round tip.
Pipe 6 cm or 2 ½ inch rings onto parchment-lined baking sheets, spaced 4 cm or 2 inch apart.
Using the bottom of any round cup, dip the cup in flour and lightly press on each biscuit’s surface to flatten them out to about 2 cm (about 1 inch) thick.
Bake, rotating halfway through, for about 20 minutes until lightly golden around edges, but still light in color at the center.
Transfer sheets to wire racks; let cool completely.
Tips and Tricks:
When flattening the biscuits using cups, make sure you dip the surface of the cup in flour each time otherwise the dough will stick to the cup.
I like to use cups that have bottoms with designs and are not completely flat. That way the design imprints on the biscuits.
You can enjoy them as tea biscuits.
Serving and storing suggestions:
The biscuits will last in an airtight container at room temperature for up to2 weeks.