In a mixing bowl, dissolve yeast in warm milk and let it sit for 5 minutes.
1/2 cup milk, 2 teaspoons yeast
Add sugar, salt, melted butter, beaten egg, and vanilla extract to the yeast mixture. Stir well.
1/4 cup sugar, 1/4 cup unsalted butter, 1 egg, 1 teaspoon vanilla extract, 1/4 teaspoon salt
Gradually add flour, mixing until a dough forms. Knead until smooth and elastic, about 10 minutes.
2 cups all-purpose flour
Cover the dough and let it rise for 1-2 hours, or until doubled in size.
Preheat the oven to 375°F (190°C). Roll out the dough on a floured surface into a thin rectangle.
Cut the dough into triangles and roll each triangle from the base to the tip to form a crescent shape.
Place the cornetti on a baking sheet lined with parchment paper. Let them rise for another 20 minutes.
Bake for 15 minutes or until golden brown. Dust with powdered sugar before serving.
Powdered sugar
Notes
For a richer flavor, fill the cornetti with chocolate, jam, or custard before rolling.
Serve warm with a cup of espresso for an authentic Italian breakfast.