Mix whole wheat flour and baking powder in a bowl.
Add eggs, sugar, and olive oil, then mix well.
Add nuts and dried fruits and mix into the dough.
Shape the dough into a long log and place it on a baking pan.
Bake in a preheated oven at 170°C for 25 minutes.
Let cool, then slice into 1cm thick pieces.
Return the sliced biscotti to the oven and bake at 150°C for an additional 15 minutes.