Preheat the oven to 170°C fan-forced.
Ensure your butter is soft and at room temperature. This is important for smooth mixing.
Add the butter, olive oil, orange juice, ouzo, cognac, salt, vanilla extract, baking powder, ground cinnamon, ground cloves, and white sugar to a mixing bowl. Mix until well combined.
Before adding the flour, ensure your mixer is fitted with a beating head. If you don’t have the appropriate attachment, you can mix by hand when incorporating the flour.
Gradually add the self-raising flour, a little at a time, and mix until a soft, pliable dough forms. The dough should not be sticky and should hold its shape easily.
Weigh out 45g dough portions and roll into balls. Flatten each ball slightly in your palm.
Place a frozen Nutella blob in the centre of the dough, then wrap the dough around it, ensuring the Nutella is fully enclosed.
Roll the dough into a smooth ball, then shape it into a cylinder or oval shape and place it onto a baking tray lined with parchment paper.
Bake for 20–30 minutes or until golden brown, then remove from the oven and allow the cookies to cool completely.