Preheat oven to 350 degrees F.

In a large bowl, combine flour, sugar, cocoa powder, baking soda and salt.

In a separate bowl, mix together eggs, egg whites and vanilla extract.

Gradually add egg mixture to flour mixture blending as well as possible.

Toss almonds with M&M's then add to flour mixture and blend just until combined.

Divide dough in half and using a well floured surface roll each dough into 2 logs, 2 inches in diameter. Place on a greased sheet pan and brush with beaten egg.

Bake until light golden brown, about 30-35 minutes. Allow biscotti logs to cool 15 minutes then cut into slices on the bias.

Place biscotti slices back on baking sheet and bake in a 350 degree oven until toasted, about 15-20 minutes. Cool.

If desired, melt ½ pound bar of dark chocolate according to package directions for melting chocolate. Dip end of biscotti in chocolate and set on parchment paper to cool. Decorate with mini M&M's.