01 -
Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper, ensuring it covers the sides. Lightly coat underneath with cooking spray.
02 -
In a large bowl, beat eggs and granulated sugar for 5 minutes until pale and tripled in volume. This aeration is key to a light sponge.
03 -
Sift flour, cocoa powder, baking powder, and salt. Gently fold into egg mixture using a rubber spatula in a figure-eight motion to preserve air.
04 -
Spread batter evenly on prepared pan. Tap to remove air bubbles. Bake for 10–12 minutes until the center springs back when lightly pressed.
05 -
While hot, invert cake onto a clean towel dusted with powdered sugar. Carefully peel off parchment. Roll cake in the towel and cool completely.
06 -
Whip heavy cream to soft peaks. Fold in powdered sugar and peanut butter until smooth. Add more cream if too thick or chill briefly if loose.
07 -
Unroll cooled cake. Spread filling evenly, leaving 1/2-inch border. Sprinkle chopped peanut butter cups. Re-roll cake without towel, forming a tight spiral.
08 -
Refrigerate cake at least 30 minutes before slicing for clean cuts. Dust with powdered sugar and serve at room temperature for best flavor.