First for the biscuit tart. Take oreo biscuit and Marie biscuits and grind it separately in a mixer. Then add butter to it. Mix it well. Then set it in a mould. And let it set in the fridge.

For the butterscotch crackers crush the mixed nuts. (peanuts, almond and kaju). In a pan add sugar. Sprinkle some water when it get caramilised. Add the nuts. Then add butter.

Then spread the mixture on a plate and let it cool. Then just take it out and put it in a foil or plastic bag and crush it. Keep it aside

Now for the Pannacotta. Add fresh cream in pan. Keep stiring. When it comes to boil add the 1 teaspoon butterscotch sauce(I have used it instead of butterstoch essence). Then add some condensed milk. Mix it well. Now add the geletain. Put off the flame. Now add the butterscotch crackers mix it well. Keep some for garnishing.

Now in a bowl first put the mixture then half of the rosogolla. Then again place the mixture and then again the rosogolla. Garnish the rest of the butterscotch crackers. Let it set in the fridge

For serving. Take the biscuit tart then place a portion of the Pannacotta on it. Please note that the rosogolla are medium sized and for making butterscotch sauce we just need to caramilising sugar add butter and fresh cream to it.