Line your baking tray with parchment paper to make removal easier later.
Chop the dark chocolate into small pieces, which helps it melt evenly and smoothly.
In a saucepan over low heat, melt the butter gently until it’s just starting to foam, about 2 minutes. Keep the heat low to avoid browning.
Add the chopped dark chocolate to the melted butter and stir gently until completely melted and glossy, about 3 minutes. Your kitchen should fill with a rich cocoa aroma.
Stir in the honey (or golden syrup) and vanilla extract, mixing until the mixture is shiny and smooth.
Remove the pan from heat and gently fold in the mixed nuts, ensuring they’re evenly coated with the chocolate mixture.
Pour the mixture into your prepared tray, spreading it out evenly with a spatula and pressing gently to compact it.
Let the mixture sit at room temperature for about 10 minutes, then transfer the tray to the fridge to chill for at least 2 hours until firm.
Once set, lift the firm slice out of the tray using the parchment paper and place it on a cutting board.
Cut into squares or rectangles with a sharp knife, wiping the blade with a warm cloth between cuts for clean edges.
Enjoy your no bake chocolate nut slice, best served slightly chilled to keep that chewy and crunchy texture perfect.
