Three tender sponges, softly whipped cream, and a heap of raspberries between every layer.
Preheat the oven to 180C. Butter and line three 20cm cake tins.
Cream the butter and caster sugar until pale and fluffy, about 5 minutes.
Beat in the eggs one at a time, then the vanilla.
Fold in the flour and baking powder alternately with the milk, until just combined.
Divide the batter between the tins and bake 25-28 minutes, until a skewer comes out clean.
Cool in the tins 10 minutes, then turn out onto a rack to cool completely.
Whip the cream with the icing sugar to soft peaks.
Sandwich the layers with whipped cream and a generous scattering of raspberries between each.
Frost the top and sides lightly, then finish with the remaining raspberries.