9. If not already at room temperature, cut the butter into small pieces and melt it slightly and let it cool to room temperature. Add it to the bowl with your sugar and egg yolks and mix until even.
10. Once all of your ingredients are prepared, combine them in the large mixing bowl containing the flour and Lievito Pane. Mix until even using the electric mixer.
11. Grease a 9-inch pan using cooking spray or butter and slowly pour the mixture into the greased pan.