Spray a 20cm (8 inch) square cake tin with oil and line with baking paper and set aside
Break the chocolate into small pieces and add to a large, heatproof bowl
Place the large bowl over a small saucepan of gently simmering water (this creates a double boiler). Stir the chocolate until it’s almost melted, then remove from the heat and stir it until smooth.
Add the rest of the ingredients to the melted chocolate, crushing the meringues with your hands as you toss them in
Give it all a good stir, then pour into your prepared tin.Move the mixture around to the corners of the tin, but don’t be tempted to smooth it out -you want that bumpy finish! Refrigerate until set
Once set, cut with a large, sharp knife and enjoy! Unlike my photos, I cut mine into small pieces, as you only need a mouthful, but feel free to cut yours into large pieces.