Cream butter and sugar together until light and fluffy. Then, add eggs, baking powder, vanilla and flour and mix well.
3. Step
Bake for 20 minutes or until cooked through and fluffy.
4. Step
To make buttercream, cream together icing sugar and butter and mix well.
5. Step
Once the cake has cooled, slice into two equal halves. Spread jam on the bottom and top with piped buttercream. Top with second cake half and a dusting of powdered sugar.
