Ingredients

3 cups all purpose flour
1 tablespoon baking powder
1/2 teaspoon salt
1/4 teaspoon ground cinnamon
1 cup toasted hazelnuts
3/4 cup sugar
1/2 cup unsalted butter, softened
1 tablespoon grated orange zest
1 teaspoon vanilla
3 large eggs

Directions

Preheat oven to 350 F. Line a baking sheet with parchment paper or a baking liner. Mix flour, baking powder, salt and cinnamon in medium bowl; set aside. Coarsely chop hazelnuts in a food processor. Combine sugar and butter and mix until fluffy. Add orange zest and vanilla and mix well. Add eggs 1 at a time, blending just until incorporated after each addition. Add flour mixture and mix until just blended. Mix in hazelnuts until just blended. Turn dough out onto a floured work surface. Divide dough in half. Roll each half into a 9″ x 2″ log. Place the logs on the baking sheet. Flatten each log to 12″ x 2 1/2″. Bake 25 minutes or until very light golden and firm to touch. Cool on baking sheet 5 minutes. Transfer the logs to a cutting board. Using a serrated knife, cut logs diagonally into 3/4-inch-wide slices. Place slices, cut side down, on your baking sheet. Bake 15 minutes. Turn biscotti over, bake about 15 minutes more or until light golden and firm. Transfer biscotti to racks and cool.