White chocolate and raspberry self-saucing pudding

Pudding

• 60 g unsalted butter, plus extra for greasing
• 80 g white chocolate, broken into pieces
• 160 g plain flour
• 2 tsp baking powder
• 80 g caster sugar
• 1 tsp natural vanilla extract
• 120 g full cream milk
• 1 egg
• 160 g frozen raspberries

Sauce

• 80 g white chocolate, broken into pieces
• 300 g full cream milk
• 50 g caster sugar
• 3 tsp cornflour
• 1100 g water
• 20 g flaked almonds, toasted, for decorating
• icing sugar, for decorating
• 200 g pouring (whipping) cream, for serving (optional)