Vanilla cream rolls

NGREDIENTS:

YIELD: 12 cannoncini
For the custard cream (crema pastiera):
3 egg yolks
3 tablespoons (30 gr) of all-purpose flour
1/2 cup (100 gr) of sugar
1 teaspoon of vanilla extract
8 oz (235 ml) of milk
For the cannoncini:
1 sheet of puff pastry, defrosted (about 8 oz, 225 gr)
1/4 cup (50 gr) of sugar
1 egg (for egg wash)
powdered sugar to decorate

PREPARATION:

Start by preparing the custard cream (crema pastiera):
Warm up the milk until hot (not boiling).
In a medium-sized pan, whisk the egg yolks with the sugar, vanilla extract, and flour, until light and fluffy.
Add the milk some at a time while whisking, making sure there are no lumps.