01 -
Preheat oven to 175°C and line a muffin tin with cupcake liners. Cream butter and granulated sugar until fluffy. Add eggs one at a time, then stir in vanilla. Fold in flour and milk until smooth. Fill each liner halfway with batter.
02 -
In a separate bowl, beat cream cheese, sugar, egg, vanilla, and sour cream until smooth. Spoon a dollop of cheesecake mixture onto the center of each cupcake batter portion.
03 -
Bake for 20-25 minutes or until a toothpick inserted near the cheesecake center comes out mostly clean. Cool cupcakes in the pan briefly, then transfer to a wire rack. Refrigerate until completely chilled.
04 -
Whisk egg yolks, sugar, and vanilla in a heatproof bowl. Heat heavy cream until hot but not boiling. Slowly temper cream into egg mixture while whisking. Return to low heat and cook, stirring, until custard thickens. Let cool slightly.
05 -
Spread a thin layer of custard atop each chilled cupcake. Refrigerate until custard sets firmly, approximately one hour.
06 -
Just before serving, sprinkle each custard layer evenly with granulated or brown sugar. Use a small kitchen torch to caramelize the sugar until golden and crisp. Finish with a light dusting of powdered sugar.