different kind of cookie

I haven't made these, but I've heard good things about them and I don't want to forget!

Flourless, butterless chocolate chocolate chip cookies

3/4 cup cocoa powder
2 1/2 cups confectioner's sugar
piece salt
1/2 cup walnuts, roughly chopped
1 tablespoon vanilla
4 egg whites
1/2 cup chocolate chips
1/2 cup white chocolate chips

Preheat oven to 350.
Put dry ingredients into bowl and mix on low speed 1 minute.
In another bowl, combine vanilla and egg whites. With mixer running, slowly add the whites and mix for 2 minutes on medium speed.
With 2-oz scooper, scoop cookie dough and place onto non-stick baking sheet. Make sure to space the cookies about 3 inches apart.
Lower oven temperature to 320 and bake for 14 minutes or until small thin cracks appear on the surface of the cookies. Cool on rack.
NOTE: I made these at Christmas so there would be a cookie that I could have and everyone ate these more than the others. These originally had 2 cups of walnuts and NO chocolate chips. The chips make them.

From crabhappychick on http://www.grouprecipes.com/