Almond Cake with White Chocolate Topping

Base

• 100 g butter, plus extra for greasing
• 150 g dark chocolate, small pieces or callets
• 4 medium eggs
• 130 g caster sugar
• 130 g ground almonds
• 1 tsp baking powder

White chocolate topping

• 150 g white chocolate, small pieces or callets
• 50 g water
• 50 g butter