Take biscuits in a blender and powder them finely.

Now take butter, peanut butter in a bowl and whip till creamy. Add in confectioners sugar and whip again till mixed well.

Now add in chocolate chips and powdered biscuits and mix well.

Spoon this in a parchment lined pan. Press evenly so it forms base. Put this in fridge till needed.

Now take chocolate chips and peanut butter in a heat proof bowl and place it over a double boiler and melt it gently.

Now spoon this over the base and spread evenly. Set this in fridge for couple of hours.

Cut it into squares.