If you haven’t had time to bake a cake the easiest option I’ve found is to buy a sponge cake from the supermarket, spread jam and whipped cream on the first layer (as a filling) then top with the second layer of cake. Spread a thick layer of whipped cream over the top of the cake then decorate with sprinkles. Voila!
Add candles and you’ve got a great birthday cake everyone will love.
To whip the cream for a round sponge I use 250ml of cream, 1-2 Tbsp icing sugar and 1 tsp vanilla essence.