Grease and baseline your tins with baking paper and preheat the oven to 180 °C350 °F Gas 4 °F
Put the butter into a bowl and beat for a minute until smooth and creamy
Gradually beat in the sugar for 3 minutes. Break the eggs into a bowl with the vanilla essence and beat them together. Slowly add the egg mixture to the creamed mixture a bit at a time, so it doesn't curdle. If it does, add a little flour. Beat for 5 minutes
Sift the four and add this to the mixture and the milk. Fold in gently until everything is combined.
Spoon the mixture to both tins and spread out evenly. Bake for 20 to 25 minutes until golden brown. When done leave in the tins for 2 minutes then turn out onto a wire rack to cool.
In a bowl, add the softened butter with the sieved icing sugar. Beat together until smooth and add the vanilla essence if you are using it. Beat again until creamy.
Set the sponge upside down on a serving plate and spread over the jam. Do the same to the other sponge and spread over the buttercream. Sandwich together and dust with icing sugar. Enjoy!
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