Gluten Free Almond Cake with White Chocolate Topping

Cake

• 5 ½ oz dark chocolate, small pieces, chips or chunks (see Tip)
• 3 ½ oz unsalted butter, plus extra to grease
• 4 jumbo eggs
• 4 ½ oz caster sugar
• 4 ½ oz ground almonds
• 1 tsp baking powder

White Chocolate Topping

• 5 ½ oz white chocolate, small pieces, chips or chunks
• 2 oz water
• 2 oz unsalted butter