Berry Custard Pastry with Italian Crema Pasticcera

Ingredients:

For the pastry:

1 sheet puff pastry, thawed
1 egg, beaten (for egg wash)
1/4 cup apricot jam (optional, for glazing)
For the Crema Pasticcera:

2 cups whole milk
1/2 cup granulated sugar
4 egg yolks
1/4 cup all-purpose flour
1 teaspoon vanilla extract
Zest of 1 lemon
For the topping:

1 cup mixed fresh berries (strawberries, blueberries, raspberries)
Powdered sugar for dusting (optional)
Directions:
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