Classic Vanilla Custard Slices Recipe

whole milk
1/2 cup heavy cream
1/2 cup granulated sugar
1/4 cup cornstarch
4 large egg yolks
2 tablespoons unsalted butter
2 teaspoons pure vanilla extract
Pinch of salt

For the icing:
1 cup powdered sugar
2 tablespoons milk (or as needed for consistency)
1/2 teaspoon vanilla extract
Optional: melted chocolate for feathering design

How to Make Vanilla Custard Slices

Step 1: Prepare the Puff Pastry
Preheat your oven to 400°F (200°C). Line two baking sheets with parchment paper. Place the puff pastry sheets