Preheat your oven to 180°C (160°C fan).
Grease both cake tins with butter generously.
Line the bottoms with baking parchment paper.
This prevents sticking and ensures easy removal.
Beat butter and sugar until light and fluffy.
Add eggs one at a time, mixing well.
Fold in flour and baking powder gently.
Add half the melted white chocolate to mixture.
Don't overmix or cake will be dense.
Divide batter equally between both prepared tins.
Smooth the tops with your spatula carefully.
Bake for 25 to 30 minutes exactly.
Test with a skewer; it should come clean.
Let cakes cool in tins for 10 minutes.
Transfer to wire rack to cool completely.
Whip double cream with icing sugar until stiff.
Fold in remaining melted white chocolate gently.
Crush half the raspberries with a fork.
Mix crushed berries into the cream mixture.
Place first cake layer on serving plate.
Spread cream filling evenly over the top.
Add whole raspberries over the cream layer.
Place second cake on top very carefully.
Decorate with remaining raspberries and white chocolate.