Portuguese Custard Tarts - Pasteis de Nata

Preheat oven to 375 degrees F (190 degrees C.) Lightly grease 12 muffin cups and line bottom and sides with puff pastry.

In a saucepan combine milk cornstarch sugar and vanilla. Cook stirring constantly until mixture thickens. Place egg yolks in a medium bowl. Slowly whisk 1/2 cup of hot milk mixture into egg yolks. Gradually add egg yolk mixture back to remaining milk mixture whisking constantly. Cook stirring constantly for 5 minutes or until thickened. Remove vanilla bean.

Fill pastry-lined muffin cups with mixture and bake in preheated oven for 20 minutes or until crust is golden brown and filling is lightly browned on top