01 -
Heat oven to 350°F. Line a 10×15-inch jelly roll pan with parchment paper and grease it lightly.
02 -
Beat eggs and sugar until pale and thick. Mix in vanilla. Sift flour and baking powder together, then fold into egg mixture. Add lemon zest and juice.
03 -
Pour batter into pan, spreading evenly. Bake 12-15 minutes until springy to touch.
04 -
Dust a clean kitchen towel with powdered sugar. Turn hot cake onto towel, remove parchment, and roll up with towel inside. Let cool completely.
05 -
Whip heavy cream to soft peaks. Add powdered sugar, lemon extract, and zest. Whip until stiff peaks form.
06 -
Unroll cooled cake, spread with lemon cream, and roll back up without towel. Chill at least 1 hour. Dust with powdered sugar before serving.