Ingredients

1 cup butter, softened2 cups sugar2 large eggs, room temperature2 teaspoons vanilla extract3 cups all-purpose flour2 teaspoons baking powder1 tablespoon instant espresso powder1/2 cup baking cocoa

Preparation

In a large bowl, cream butter and sugar until light and fluffy. Beat in eggs and vanilla. In another bowl, whisk flour, baking powder and espresso powder; gradually beat into creamed mixture. Divide dough in half. Beat cocoa into half of dough. Divide each color into 2 portions.

On baking sheets, roll each portion between 2 sheets of waxed paper into a 9x7-in. rectangle. Remove waxed paper. Place a chocolate rectangle on top of a plain rectangle. Roll up tightly jelly-roll style, starting with a long side. Tightly roll waxed paper over dough, using the waxed paper to mold the dough into a smooth roll. Securely wrap dough in waxed paper; repeat with remaining dough. Freeze 1 hour or until firm.

Preheat oven to 350°. Unwrap and cut dough crosswise into 1/4-in. slices. Place 2 in. apart on ungreased baking sheets. Bake 10-12 minutes or until edges are light brown. Cool on pans 2 minutes. Remove to wire racks to cool.