Biscotti al cacao e dulce di latte

Jack made these wonderful little cookies from the book Biscotti

3 cups all purpose flour

1 cup cocoa powder

1/4 tsp salt

2 1/2 tsp baking powder

1 cup + 1 tbsp butter

1 1/4 cups sugar

1/2 tsp vanilla

1 egg + 1 yolk

Dulce di latte, optional

Sift together flour, cocoa, salt and baking powder.  Set aside.

Cream butter and sugar until light and fluffy.  Add vanila and eggs.  Mix well.  Gradually add dry ingredients.  Mix until it all comes together.  Wrap in plastic wrap and refrigerate 30 minutes.  

Transfer dough to lightly floured surface.  Shape into two logs, 2 inches in diameter.  Preheat oven to 350 degrees.  Slice the logs into 1/4 inch slices.  Bake on parchment paper for 7-8 minutes.  Spread with dulce di latte if desired.  (Of course, I could not find duce di latte, so I used dulce de leche.  I think it's the same thing...)