Preheat your oven to 350°F and line a baking sheet with parchment paper.
In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt.
In a separate mixing bowl, beat together the eggs and vanilla extract. Add the egg mixture to the dry ingredients, mixing until a dough forms. Stir in the chopped almonds.
Divide the dough in half and shape each half into a log about 12 inches long and 2 inches wide. Place the logs on the prepared baking sheet, leaving about 3 inches of space between them.
Bake the logs for 25-30 minutes, or until they are lightly golden. Remove the baking sheet from the oven and allow the logs to cool for about 10 minutes.
Using a serrated knife, slice the logs diagonally into 1/2-inch thick slices. Place the slices back onto the baking sheet, cut side down.
Reduce the oven temperature to 325°F and bake the biscotti for an additional 15-20 minutes, or until they are crisp and lightly golden. Remove the biscotti from the oven and allow them to cool completely on the baking sheet. Enjoy your biscotti with a cup of coffee or tea!