01 -
Arrange a rack in the lower third of the oven and preheat to 175°C. Grease an 46 x 33 cm baking sheet with cooking spray and line the bottom with parchment paper.
02 -
In a medium bowl, whisk together the all-purpose flour, cornstarch, baking powder, and kosher salt.
03 -
In the large bowl of a stand mixer fitted with a whisk attachment, beat egg whites and cream of tartar on medium speed until thickened. Gradually add granulated sugar, then increase speed to high and whisk until glossy stiff peaks form. Blend in peppermint extract.
04 -
Using a rubber spatula, gently fold the dry ingredients into the egg white mixture, preserving airiness.
05 -
Transfer a little more than half of the batter (approximately 350 g) to a medium bowl. Add red gel food coloring and gently fold until fully incorporated, adjusting to desired shade. Reserve remaining batter (approximately 250 g) uncolored.
06 -
Fill two piping bags fitted with round tips, one with white batter and one with red. Starting at a corner, diagonally pipe white lines spaced 2.5 cm apart across the baking sheet. Pipe red batter between each white line, ensuring complete coverage. Hold piping bag tip with one hand and tilt upward at row end to prevent drips.
07 -
Bake until cake begins to pull away from pan edges and springs back when gently pressed, about 12 to 15 minutes. Remove and cool for 5 minutes in pan.
08 -
Lightly dust a clean kitchen towel with flour. Invert the warm cake onto the towel, peel off parchment, and starting at a short end, carefully roll cake tightly into a spiral with the towel. Cool completely, about 1 hour.
09 -
Meanwhile, beat confectioners’ sugar, softened butter, and cream cheese in a stand mixer fitted with paddle attachment on medium speed until smooth. Blend in peppermint extract and kosher salt until combined. Add red gel food coloring and mix until pale pink. Gently fold in crushed candy canes.
10 -
Unroll cake and remove the towel carefully. Spread frosting evenly over the surface, then roll cake back into a spiral. Use a pastry brush to dust off any excess flour.
11 -
Refrigerate assembled roll for up to one day before serving to allow flavors to meld and frosting to set.