Preheat the oven to 180 Degrees Celsius. Grease a 25cm round baking dish or pan

Place the butter and sugar in a large bowl and beat until fluffy, then add the egg, ideal milk and vanilla and beat to combine

Add cake flour, bicarbonate of soda and salt and mix together with a spatula. Transfer the mixture to the prepared baking dish and smooth the top. Stud the top with smarties.

Bake in the preheated oven, about 20 minutes until cooked on the outside but soft inside. Serve warm with vanilla ice cream