Ubercorn ice cream cone cakes

Name: Ubercorn ice cream cone cakes
Prep time: 1 h 30 min
Cook time: 12 min
Total time: 1 h 42 min
Cuisine: American
Ingredients: 12 ice cream cones; 50g slightly salted butter , softened, plus extra for greasing; 50g caster sugar; 1 medium egg , lightly beaten; 1 tsp vanilla extract; 50g self-raising flour; 1 tbsp milk; 250g mascarpone; 50g icing sugar; few drops of vanilla extract; ½ tbsp milk; packet of multicoloured sweets; white, red, dark and pale purple icing fondant (approx. 50g each) (you can make the pale purple by combining white and dark purple); 1 small and 1 slightly larger mask template cut from a piece of card; dark chocolate chips