01 -
Set your oven at 350°F. Line a 10×15-inch jelly roll pan with parchment and grease it lightly.
02 -
Whisk the eggs and sugar until thick and pale. Stir in the vanilla. Sift the baking powder and flour together, then gently mix it into the eggs. Add the lemon juice and zest.
03 -
Spread the batter evenly in the pan and pop it in the oven. Bake for 12–15 minutes, until it feels springy.
04 -
Sprinkle a clean towel with powdered sugar, flip the hot cake onto it, remove the parchment, and roll it up with the towel inside. Let it cool completely.
05 -
Whip the heavy cream until it’s soft and fluffy. Add powdered sugar, lemon extract, and zest, and whip until stiff.
06 -
Carefully unroll the cooled cake and spread the lemon cream filling. Roll it back up (without the towel) and chill for at least an hour. Dust the top with powdered sugar before serving.