- 150 g unsalted butter
- 100 g plain chocolate - chopped
- 200 g milk chocolate - chopped
- 150 g caster sugar
- 1 tsp vanilla extract
- 3 large eggs
- 75 g plain flour - sieved
- 100 g white chocolate - chopped
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Preheat the oven to 170°C/325°F/Gas 4.
Grease and line a 20cm square cake tin with baking paper.
Put the chopped plain and milk chocolate and unsalted butter in a heatproof bowl set over a pan of simmering water. Heat until melted, stirring occasionally.
Remove the bowl from the pan and allow the chocolate mixture to cool slightly.
Beat the caster sugar and vanilla into the chocolate mixture.
Whisk in the eggs, one at a time, and then add the plain flour.
Beat until smooth.
Stir in the white chocolate chunks.
Pour the mixture into the tin and bake for 30 minutes or until a skewer comes out clean.
Cool completely in the tin before removing.
Cut into 20 squares.