Mix the 3 eggs with the sugar and a pinch of salt until well blended and smooth.
Add the warm butter and slowly add the sifted flour with the vanillina powder, or the 1/2 teaspoon of vanilla extract and mix until well blended.
Add the 5 table spoons of the candied fruit or nuts, chocolate chips, almonds or peanuts and mix slowly to incorporate all.
Form two loaves, put them on a baking tray with parchment paper and bake on a pre-heated oven at 355F for 30-35 minutes.
When the loaves are golden, take them out of the oven and let them cool.
Slice the cantucci in diagonal shape of about 1/2" thick. Optionally you can sprinkle the cantucci with powdered sugar.