Step 1

Preheat oven to 350-degrees F. Prepare large baking sheet by lining with parchment, baking mat, or with butter and flour.

Step 2

In a bowl whisk together flour, cocoa powder, baking soda, and salt.

Step 3

In a separate bowl, using an electric mixer beat together butter and granulated sugar until light and fluffy. Add eggs and beat until combined well. Add vanilla extract and combine well.

Step 4

Stir in flour mixture to form a stiff dough. Mix in chocolate chips until combined.

Step 5

Divide dough in half. Flour hands and form dough into two slightly flattened logs on prepared baking sheets, each approximately 12 inches long and 2 inches wide. Sprinkle with confectioners’ sugar.

Step 6

Bake 30-35 minutes, or until slightly firm to the touch. Cool on baking sheet 5 minutes.

Step 7

Transfer to cutting board and cut diagonally into ¾-inch slices. Arrange biscotti, cut sides down, on baking sheet and bake for about 10 minutes, or until crisp. Cool on a rack.

Step 8

Store in airtight containers up to 1 week. Biscotti may be kept wrapped in freezer safe plastic wrap and frozen up to a month.