Take oreo biscuits and separate cream from biscuit and grind the biscuit.

Add sugar in biscuit and grind it nicely add milk in biscuit batter and mix it nicely

Then add eno and again mix if you find mixture is thick then u can add little more milk and bring the mixture in a smooth consistency

Then take pan grease with ghee or butter spread the batter and cook it from both the sides on medium flame

Simultaneously add milk in the cream 1tsp and mix it well with cream and spread on the sandwich cake