Desi Ghee Besan Laddu are sweet meats and hence are covered specifically under HSN 2106.90.99 as sweet meats attracting GST rate @ 18%.
It is seen that when two rates are available for the same goods ( one higher and on lower), Normally 5% rate is meant for those suppliers who sell unbranded and without container (in loose form).
In case you fall in the second category and are paying 18 %, you should make a representation to the Board for clarification. It is very risky to supply goods at lower rate on your own once you have decided to pay at the higher rate i.e. 18%