Crispy rolled pastry tubes filled with meringue are an elegant Puebla confection. This delicate, family-friendly dessert is a sweet, artistic treat of Poblano pastry traditions.
Preheat oven to 350°F. Line a baking sheet with parchment paper and lightly grease several metal cannoli tubes (or roll aluminum foil into tubes).
In a bowl, blend flour, a pinch of salt, and unsalted butter using your fingertips until crumbly. Whisk in egg yolks and milk, mixing until a soft dough forms.
Roll dough out thinly on a floured surface. Cut into strips about 1 inch wide and 6 inches long. Wrap each strip around the prepared tubes, overlapping slightly.
Bake wrapped tubes for 18–22 minutes until crisp and golden brown, rotating once for even color. Let cool completely before removing pastry tubes from forms.
Whip egg whites with vanilla extract on medium speed until frothy, then gradually add granulated sugar and continue beating to stiff, glossy peaks.
Spoon or pipe the meringue into each cooled pastry tube, filling them just before serving. Sprinkle with powdered sugar and serve immediately.