1 tablespoon (15ml) dark rum or water (for soaking raisins)
1 egg, beaten (for egg wash)
1/4 cup (60ml) apricot jam or simple syrup (for glaze)
Instructions
Soak raisins in rum or water for at least 30 minutes. Drain and set aside.
Make pastry cream: In a small saucepan, heat milk over medium heat until just simmering. In a bowl, whisk egg yolks, sugar, and cornstarch until pale. Slowly pour hot milk into egg mixture while whisking, then return to saucepan. Cook over medium heat, whisking constantly, until thickened (about 2-3 minutes). Remove from heat, stir in vanilla, transfer to a bowl, cover with plastic wrap touching surface, and cool to room temperature.
Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.
On a lightly floured surface, roll puff pastry into a 10x12-inch rectangle. Spread cooled pastry cream evenly over pastry, leaving a 1-inch border on one long edge. Sprinkle soaked raisins over cream.
Starting from the long edge opposite the border, roll pastry tightly into a log. Trim ends, then slice into 8 equal rounds (about 1.5 inches thick). Place cut-side up on prepared baking sheet, spacing 2 inches apart. Gently flatten each round slightly with your palm.
Brush tops with beaten egg wash. Bake for 18-20 minutes, until puffed and golden brown.
While warm, brush with apricot jam or simple syrup for shine. Let cool on a wire rack. Serve warm or at room temperature.
Tips
For best results, use all-butter puff pastry and ensure it's cold before rolling.
Pastry cream can be made a day ahead and refrigerated; whisk before spreading.
Store leftovers in an airtight container at room temperature for up to 2 days.