- Preheat your oven to 180 degrees and line a 12 hole muffin tray with paper cases. 
- Place the butter, sugar, self raising flour, milk, vanillin extract and eggs in the bowl of an electric mixer and beat on a low speed for two minutes until ingredients have combined before increasing speed and beating for a further 3 minutes or until mixture is smooth and pale. 
- Spoon the mixture into the paper cases (fill approximately ⅔) and bake in oven for 18 - 20 minutes or until the cupcakes are cooked through and golden on top. 
- Cool in the tins for 5 minutes before carefully transferring to a wire rack to cool completely. 
- While your cakes are cooling, whip the thickened cream until soft peaks form. Cover and place in the fridge until needed. 
- Once cakes are cool, use a teaspoon to remove a small circle from the top of the cake - don't remove too much, around ⅓ of the way down is plenty. Cut the portion of cake you have removed in half to create the 'butterfly wings' and set aside. 
- Add a teaspoon of strawberry jam to the hole you have created. 
- Add approximately a tablespoon of whipped cream.Place the 'wings' in the whipped cream. 
- Repeat process until all cupcakes are filled. 
- Dust lightly with icing sugar and serve.