Prep Design: Line a 10x15 inch pan with parchment. Mix egg white, sugar, oil, and flour. Color half red and half pink. Pipe heart designs on the parchment and freeze for 20–30 minutes.
Whip Eggs: Preheat oven to 350°F. Whip eggs and salt on high speed for 6–10 minutes until very thick and pale. Gradually add the sugar and beat for 4 more minutes.
Combine: Stir a small amount of the egg mixture into the melted butter and almond extract, then fold back into the main batter. Gently fold in the flour until just combined.
Bake: Spread batter over the frozen hearts. Bake for 18–20 minutes until the cake springs back when touched.
The Roll: Flip the hot cake onto a powdered sugar-dusted towel. Peel off parchment. Place a second towel over the hearts, flip, and roll the cake with the towel from the short end. Cool for 20 minutes.
Make Filling: Whip the cream cheese, powdered sugar, heavy cream, and almond extract until thick and fluffy.
Assemble: Unroll the cake, spread with a thin layer of jam, then the cream filling. Roll back up tightly (without the towel).
Set: Wrap in plastic and refrigerate for at least 2 hours before slicing.