Start by lining a 9×5″ loaf tin with baking paper
Make a Bain Marie by placing a glass bowl over a saucepan with simmering water
Break up the dark chocolate and place in the bowl to melt, stirring often
When most of the chocolate has melted, stir in the almond butter, coconut oil and maple syrup (if using)
In the meantime, heat up a dry frying pan and toast the pistachios over a medium-high heat for around 5-10 minutes, shaking regularly until fragrant (be careful not to burn!)
When a smooth chocolatey liquid has formed, take the bowl off the water and stir in the toasted pistachios
Place half of your frozen raspberries in a small bag and bash lightly with your hand or a rolling pin so that they’re partially crushed (leave the other half whole)
Quickly add the frozen raspberries (crushed & whole) to the chocolate mixture and stir (they will start to freeze the chocolate so be quick!)
Pour this mixture into the lined loaf tin and spread out so it’s roughly even
Place it into the fridge or freezer to set for around 30 mins to an hour