In mixer bowl, cream butter and sugar; beat in eggs and vanilla. Stir or sift flour and baking powder, add along with kasha to form a fairly firm dough.
Chill one hour or until dough is stiff enough to roll. On lightly floured board, roll dough 1/4-inch or thinner. Cut with cookie cutters. Place on ungreased baking sheets. Bake at 375° for 6-8 minutes or until edges begin to brown.