This was copied from a card that came with some Tupperware cookie cutters, found in my kitchen drawer. The only cookie cutters we have are some red plastic things from the 1960s. I haven't tried it, but wanted to save the information for posterity as the card is deteriorating.
Cream together ½ cup butter & 1 cup sugar.
Blend in 1 medium whole egg, or 2 small egg yolks.
Sift together, and add to mixture, ½ teaspoon salt, 2 teaspoon baking power, 2 cups flour.
Blend in ½ teaspoon vanilla.
Cut with cookie cutters, and bake on a lightly greased cookie sheet in 400°F preheated oven for 8 to 10 minutes.
For extra sparkle and colour, glaze your cookies, using this simple recipe:
Blend together ¾ cup sifted confectioner's sugar and 3 to 4 teaspoons water. Follow package directions on food colour to attain desired colour. While cookers are still warm, brush with glaze.
You will have better results cutting cookies when you work with small quantities of thoroughly chilled dough. Roll the dough to a uniform thickness (approx ⅛ inch [3 mm] makes the crispest cookies) on a very lightly floured pastry sheet. Dredge the cookie cutter in flour and shake off the excess. Press the cookie cutter into the dough with a firm, even pressure and move it gently back and forth on the pastry sheet. Then lift the cookie cutter. The cut cookie will remain on the pastry sheet ready to be transferred to a cold cookie sheet with a thin-bladed spatula.