I have never made biscotti before. This was the first time, and it was awesomely delicious. Everyone always gripes about how complicated Martha Stewart's recipes are but this was not too bad at all, the only trouble I had was slicing up the biscotti before their second spin in the oven, and to be honest, I fear the knife I used was not quite sharp enough. You could easily substitute other nuts for the pistachios but really, they taste so excellent with the chocolate and they're such a pretty green color I can't see why you would. I toasted the nuts beforehand because always do, but doing so is not required by the recipe. Here, I make two "loaves" so that the biscotti fit easily into a lunch bag, but feel free to make one large one if you'd prefer the more traditional shape.
chocolate pistachio biscotti
adapted from martha stewart's cookies.
2 cups ap flour
1/2 cup unsweetened cocoa powder
1 teaspoon baking soda
6 tablespoons salted butter (I omitted the salt since I only had this on hand), softened
1 cup sugar
2 large eggs
1 cup shelled pistachios
1/2 cup bittersweet chocolate chips (could use semisweet, I had bitter on hand)
Preheat oven to 400. Line a baking sheet.
In a small bowl combine flour, cocoa powder, baking soda and 1/4 teaspoon of salt if you are using unsalted butter. In a large bowl, cream butter and sugar until nice and fluffy. Beat in the eggs, one at a time. Beat in the flour mixture, in two parts. The dough will be very stiff. Stir or fold in the pistachios and chocolate chips by hand, until just combined.
Split the dough into two logs, place them onto the prepared baking sheet and shape into flattened logs, roughly eight by three inches in measurement. Bake for 25-35 minutes until slightly firm. Remove from the oven, drop the temperature to 300, and set the biscotti to cool for 5-10 minutes. Patience will be rewarded so give them plenty of time to firm up before slicing. Then use a sharp, serrated knife and cut on the diagonal to make one inch thick slices. Bake (or "dry out"), cut side down, until crisp but a bit soft toward the center. Martha Stewart said about eight minutes, it took me closer to twenty. Use your eyes. Cool completely before eating.