- 1 1/2 cups sifted all-purpose flour
- 1/2 teaspoon baking powder
- 1 pinch salt
- 1/2 cup butter
- 1/2 cup white sugar
- 1 egg yolk
- 3 tablespoons milk
- 1 (1 ounce) square unsweetened chocolate
- Combine butter and sugar and egg yolk. Add dry ingredients and milk alternately.
- Divide dough into 2 equal parts. Melt chocolate over low heat and add to one half of the dough.
- Use a rolling pin and roll each half into a rectangle. Put the chocolate rectangle on top of the vanilla one. Roll up like a jelly roll in wax paper.
- Chill several hours, best if chilled overnight.
- Slice them and bake at 400 degrees (200 degrees C) for about 5 minutes.