01 - Preheat the oven to 350°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, and salt.
03 - In a separate bowl, beat the eggs with vanilla and almond extracts until blended.
04 - Stir the wet mixture into the dry ingredients until mostly combined.
05 - Fold in the chopped toasted almonds evenly throughout the dough.
06 - Divide the dough in half and shape each portion into a log approximately 12 inches long and 2 inches wide using floured hands. Place the logs on the prepared baking sheet, spaced apart.
07 - Bake the logs for 25 to 28 minutes until lightly golden and set. Remove from oven and allow to cool for 10 minutes.
08 - Reduce the oven temperature to 300°F.
09 - Using a serrated knife, slice the logs diagonally into 1/2-inch thick pieces. Arrange the slices cut side down on the baking sheet.
10 - Bake the slices for 12 minutes, then flip and continue baking for an additional 10 to 12 minutes until crisp and dry. Cool completely on a wire rack.
11 - Melt the chopped dark chocolate using a double boiler or microwave in 20-second intervals, stirring until smooth.
12 - Dip one end of each cooled biscotti into the melted chocolate, allowing excess to drip off. Place on parchment paper and let the chocolate set completely before serving or storing.