I am a Bengali and I challenge @recipehind to show proof for the claim.

I have friends and teachers from Odisha and I being Myself from Bengal that Rossogola is quite Indian and Non MUGHAL.
I would like to highlight that the bengali Rossogolla was first made by Nabin Chandra Das https://twitter.com/nitayuvani/status/1324889626214019075

And that was also in 1868, Most of the chenna misti and kadapak sandesh are made in Bengal.

Odisha also claims the cases of the Rossogolla as their part of heritage but, their making of rossogolla is quite different than the Bengali ONE. Odisha Rossogolla is given

a part of fire jatra or ulta rath or going back home from the maternal aunt's home to the temple as Devi Lakshmi waited for her husband for a Long time but he came late so as the way to pacify the storm it is said Lord Jagganath Gives devi a handi of Rossogolla.

For Your Kind Attention. I can furnish proofs of all the above mentioned and the way Jagganath Temple dont allows any islamic thing into their premises. I can guarantee you are damm WRONG

Mughals have no influence in the Misti (Sweets) of the Bengal,
Be it Langcha, Mehindana, Sitabhog, Shorbhaja, Pantua, Rossogolla, Chana r Jelebi, Nolen Gurer Sondesh, Kada pak, Ras Kadam, and many more