1 1/2 c. flour
1/2 tsp. baking powder
1/8 tsp. salt
1/2 c. butter
1/2 c. sugar
1 egg yolk, beaten
3 tsp. milk
1 sq. chocolate, melted

Sift baking powder, salt, cream butter and add sugar gradually, add egg yolk and flour and milk. Divide dough in 2 parts to one add chocolate. Roll out each one. Put one on top of the other. Roll up. Chill and slice. Bake at 400 degrees for 10 minutes.