Preheat your oven to 180°C (350°F) and grease a 10x15 inch baking pan.
In a mixing bowl, whisk eggs and sugar until light and fluffy.
Sift flour and baking powder, then gently fold into the egg mixture.
Add vanilla extract and melted butter, mixing carefully.
Pour the batter into the prepared pan and spread evenly.
Bake for 10-12 minutes or until golden brown.
While baking, prepare a clean kitchen towel dusted with powdered sugar.
Once baked, invert the cake onto the towel and peel off the parchment paper.
Spread fruit preserves over the surface of the cake.
Spread whipped cream evenly on top of the preserves.
Roll the cake tightly using the towel to guide you, then wrap it in plastic wrap.
Chill in the refrigerator for at least 1 hour before slicing.