Step 1
Heat the oven to 160c/fan. Line 3 x 8 inch sandwich tins.
Step 2
Cream softened butter and sugar together for 4-5 mins until pale and fluffy.
Step 3
Add in eggs one at a time, beating well between each addition. Add vanilla extract with the last egg.
Step 4
Gently fold in flour and salt. Stop mixing when all the flour is incorporated - do not overmix!
Step 5
Split batter equally between 3 cake tins. Bake side by side for 20-25 minutes until the sponges are risen, golden brown and spring back when lightly pressed.
Step 6
Leave to cool for 5 minutes then turn out onto a rack and peel off the paper. Cool completely before filling.
Step 7
To make your buttercream, beat the butter for 5-10 mins on a high speed. When very pale and fluffy, add the icing sugar gradually, beating on a medium speed. Add salt and flavourings in and beat on high for 2 more mins.
Step 8
Once the cake has cooled, spread buttercream on each layer, making a well with a palette knife for the jam. Sandwich the other sponge layers on top and repeat.
Step 9
Ice the cake however you like - leave it naked, semi-naked or cover around the sides. Enjoy!