Break the chocolate into pieces and place into a saucepan with the dairy free spread and golden syrup (if using).
Gently heat the saucepan over a low heat, stirring frequently until the ingredients are melted and combined together.
Remove the saucepan from the heat and gently stir in the puffed rice cereal, until it is well coated in the chocolate mixture.
Carefully spoon into cake cakes. Top with sprinkles if wanted. Leave to set.