5 cups flour
1 1/2 cups cocoa powder
2 tbsp baking powder
1 cup butter
2 cups sugar
1 tbsp vanilla extract
2 cups chocolate chips
Melted chocolate to garnish
Preheat oven to 400F.
In a bowl, cream the sugar and butter with an electric beater.
Beat in eggs, one at a time, until smooth. Add vanilla extract.
In another bowl, sift together the dry ingredients and add to the egg mixture. Stir in chocolate chips.
Shape the dough into 6 longs loaves and brush with beaten egg yolk. Place in oven and bake for 25 minutes.
Remove from oven and let cool completely. Cut each loaf into 1 inch slices and place back on baking sheet.
Reduce heat to 350F and place slices back into the oven. Bake for another 10 minutes, then remove from the oven and cool.
Melt the semi-sweet chocolate, and drizzle over the biscotti.