Add butter to the rice cooker, put the lid on and press Cook to melt the butter.
In a small bowl mix together sugar, cocoa powder, plain flour, salt and baking powder.
Pour in the melted butter and add an egg then mix thoroughly until there are no lumps left.
Add a splash of milk if the mixture is too thick.
Pour into your Mini Rice cooker and add optional ingredients like chocolate chips, peanut butter, pistachio paste, or raspberries.
Set the rice cooker to cook and set a separate timer for 20 minutes.
Once cooked, carefully invert the brownie onto a plate.
Serve with natural yoghurt or cream and berries.
