0. Preheat the oven to 220°C immediately as this recipe is very quick to make.

1. Unroll the puff pastry and prick it with a fork. Spread a thin layer of strawberry jam evenly over the entire sheet, but without overdoing it.

2. Roll up the pastry starting from both short sides of the rectangle, so that the right roll is the same size as the left. When the two rolls touch, press them lightly together. Cut the pastry into 1/2 cm sections and arrange the resulting hearts on a baking sheet lined with parchment paper. Sprinkle a little sugar on each pastry heart and bake immediately.

3. Leave to bake for about 15 minutes or until the pastry is golden and the sugar is well caramelized.