Preheat oven to 180˚C.
Place Dr. Oetker Nona Tarts, butter and egg in a mixing bowl. Mix well.
Roll the dough into balls and gently press the dough with your fingers into greased tart mould.
Use a fork to prick the bottom of the tart shells.
Bake at 180˚C for 10-15 minutes or until golden brown, set aside to cool.
Beat the cream cheese with sugar and vanilla flacour until smooth.
Fill the cream cheese into the tart shells and garnish with chocolate chips.