chocolate fridge cake/rocky road ingredients

[runner2]

The recipe I've got includes 200g marshmallows but I don't like them. Do I need to substitute with something else or can I just leave them out without it affecting the recipe? (I don't want to add anymore dried fruit or nuts....)

Just leave them out.

Not sure if this is remotely useful, but when I used to make it as a kid we did a massive dollop of golden syrup to make it a bit more cakey/fudgey, but we never used marshmallows. Might that work as a replacement?

Should be fine. You could add a small amount (not 200g) of extra biscuits if needed because there is too much chocolate mixture.