Can i use brown sugar instead of caster sugar?

Yes Mishkat, generally you can. If it is coarse, you may have to grind it to fine sugar. If your sugar is of a darker brown Colour, your cane may look darker, but not so much if it is golden brown.

Mamta

Thanks! Can I also substitute the plain flour with whole wheat flour? And if so, do I have to make any further changes to the recipe?

Sorry, I have not made one with whole wheat flour, so can?t comment.

Mamta