Chocolate Chip Biscotti

Ingredients

• 2 cups all-purpose flour
• 1-1/2 tsp baking powder
• 1 tsp ground cinnamon
• 1/8 tsp salt
• 1/2 cup unsalted butter, at room temperature
• 1/2 cup firmly packed golden brown sugar
• 1/2 cup granulated sugar
• 1 tbsp instant espresso powder
• 2 large eggs
• 1 cup coarsely chopped toasted walnuts
• 1 cup semisweet chocolate chips