3 layer chocolate icing

 3 layer chocolate icing

5 squares baking chocolate 

 1½ cups butter

3 egg yolks

2 teaspoon vanilla

2 cups powdered sugar

Melt the baking chocolate on top of a double boiler over simmering water. Cream the butter, egg yolks and vanilla and slowly add baking chocolate. Add sugar  to make a proper consistency for spreading.