A great way to add an additional flavour but also texture to your Rocky Road. Just make sure they are chopped into small enough pieces.
Fruit is a fantastic at cutting through all the chocolate in this. Dried fruit is better as it sets with the tiffin.
To bring even more chocolate to the slices, why not add in your favourite coated chocolate? A fab way to use up Halloween chocolate too.
If you want to bring a different flavour combination without too much alteration to the recipe, a spoonful of your favourite spread would work. I love biscoff in mine!