These rich chocolate morsels are best eaten the day they are made, as their texture changes when refrigerated and they don’t keep particularly well at room temperature.
Make the chocolate cream as instructed and refrigerate it for 2 hours.
Preheat the oven to 160°C and grease and line a 20 cm square slice tin. Melt the butter over a low heat in a saucepan. Whisk the castor sugar into the lightly beaten eggs, then stir