In a large bowl, combine the eggs with the granulated sugar.
Using an electric mixer, whisk these together 10 minutes, until the mixture becomes pale, thick, and doubled in volume. Add the sunflower oil, continuing mixing.
Sift over the all-purpose flour and the cocoa powder.
Add the dry ingredients to the wet mixture, using a spatula to gently fold them in until the flour and cocoa are fully incorporated.
Line a large baking tray with parchment paper. Pour the batter evenly onto the prepared baking tray and spread it out to the edges.
Bake for approximately 15 minutes on 180°C (350°F) , or until the cake springs back when lightly touched. Once baked, remove the tray from the oven and allow the cake to cool completely on the tray.
Take the cake out of the pan with the baking paper, then invert the cake onto a clean work surface. Gently roll the cake into a loose cylinder, and place it in the refrigerator to chill while you prepare the mascarpone filling.
Make the Filling
In a large bowl, combine the mascarpone cheese, double cream (heavy cream), and the powdered sugar (icing sugar).
Using an electric mixer whisk until the mixture is smooth, light, and airy. Add the vanilla and orange essence (extract) and continue to mix on medium speed until the essences are evenly distributed throughout the cream.
Prepare the canned chopped peaches. Drain them well and dice them into smaller pieces to ensure even distribution throughout the filling.
Fill and Roll
Gently unroll the chilled chocolate sponge onto a clean surface, keeping the parchment paper underneath. Spread the mascarpone cream evenly over the surface of the cake, leaving a small border around the edges.
Take the prepared, drained and chopped peaches, and spread them evenly over the mascarpone cream.
Carefully roll the cake from one of the short ends, using the parchment paper to assist you. Roll tightly and evenly, ensuring the filling is enclosed within the sponge.
Wrap the roll tightly in cling film or parchment paper and place it in the refrigerator to chill for at least two-four hours. Remove the roll from the refrigerator, unwrap it, and slice it into desired portions.
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Notes
Be careful not to overmix the filling cream, as this can cause the mascarpone to become grainy.If the peaches are packed in syrup, drain them well to prevent the filling from becoming too watery.Once rolled, wrap the tiramisu cake roll tightly in cling film or parchment paper. Place it in the refrigerator to chill for at least two-four hours, or preferably overnight. This chilling period allows the cake to set, the flavors to meld, and makes it easier to slice.The most straightforward way to serve the mascarpone roulade is to simply slice the chilled roll into individual portions. This works perfectly for a casual gathering or a quick dessert.Serve slices of the roll with fresh berries or a side of the remaining canned peaches for a refreshing accompaniment.Keep the sliced roll in the refrigerator. It's best consumed within 2-3 days for optimal freshness.