Preparation Steps

• Preheat oven to 325°F (160°C). Line a baking sheet with parchment paper.
• In a medium bowl, whisk together flour, baking powder, and salt.
• In a large bowl, cream together butter and sugar until light and fluffy. Beat in eggs one at a time, then stir in vanilla.
• Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
• Divide the dough in half. On a lightly floured surface, shape each half into a log, about 12 inches long and 2 inches wide.
• Place the logs on the prepared baking sheet. Brush with water and sprinkle with cinnamon sugar.
• Bake for 25-30 minutes, or until golden brown. Let cool for 10 minutes.
• Reduce oven temperature to 300°F (150°C). Slice the logs into 1/2-inch thick slices. Place the slices back on the baking sheet.
• Bake for 15-20 minutes, flipping halfway through, until biscotti are crisp and golden.
• Let cool completely on a wire rack.