Preheat the oven to 400.

Cream the butter and sugar. Add in eggs, milk, and vanilla.

In a separate bowl mix flour and baking powder.

Gradually add flour mixture to the wet ingredients. Mix till dough is well incorporated and smooth. DO NOT CHILL.

On an ungreased baking sheet, use a cookie press to get cookie shapes.

Bake cookies for 8 minutes, keep watch so they do not burn. Cookies should only be barely golden on the edges at most.

Top with buttercream, when cooled, using a piping bag.