Method
Preparation
Preheat the oven to 350°F (175°C). Line a 15x10-inch jelly roll pan with parchment paper.
In a bowl, sift together the flour, cocoa powder, baking powder, and salt.
In a separate bowl, beat together the eggs and granulated sugar until thick and pale.
Stir in the vegetable oil and vanilla extract.
Gently fold in the dry ingredients until just combined.
Baking
Pour the batter into the prepared jelly roll pan and spread evenly.
Bake for 12-15 minutes or until the top springs back when lightly pressed.
While baking, lay a clean kitchen towel on a flat surface and dust it with powdered sugar.
Rolling the Cake
Once baked, immediately invert the cake onto the prepared towel and carefully peel off the parchment paper.
Roll the cake up with the towel from the short end while still warm. Let cool completely before filling.
Making the Filling
In a chilled bowl, whip the heavy cream until soft peaks form. Add sugar or vanilla extract if desired.
If using cherry pie filling, keep it ready to spread.
Assembling the Roll Cake
Unroll the cooled cake and spread an even layer of whipped cream.
Sprinkle the cherries or spread the cherry pie filling over the cream.
Gently roll the cake back up, using the towel to guide you.
Wrap the cake in plastic wrap and refrigerate for at least 1 hour to set.
Garnishing and Serving
Dust the top with powdered sugar.
Sprinkle dark chocolate shavings for a bakery-style touch.
Slice and serve chilled for the best flavor.
Notes
For the best flavor, serve chilled. Store in an airtight container in the refrigerator for up to 3 days or freeze for up to 1 month.