Preheat the oven to 180°C (356°F).
In a bowl, mix eggs and sugar together.
Add flour, baking powder, and salt to make the dough.
Add almonds or other nuts and mix well.
Shape the dough into a log and place it on a baking sheet lined with parchment paper.
Bake in the preheated oven for 20–25 minutes.
Let it cool, then slice into 1.5 cm thick pieces.
Put the sliced biscotti back in the oven and bake for another 10–15 minutes.