Preheat oven to 180°C.
Place the Dr. Oetker Nona Cupcake, eggs and water in the mixing bow. Mix at high speed for 2 minutes. Add in vegetable oil and mix at high speed for 1 minute.
Place paper cups in muffin tin. Scoop batter into paper cups, about 2/3 full.
Bake at 180 ˚C for 15 to 20 minutes. Set aside to cool.
For cream cheese filing, place butter, cream cheese and icing sugar in a mixing bowl. Mix at high speed for 1-2 minutes until thick, fluffy and spreadable