In a bowl, add chocolate chips and 1/2 cup heavy cream.

Melt it in microwave or double boiler. Let it cool and whip for 30 to 40 seconds and keep aside.

In another bowl, add 1 cup heavy cream and whip till stiff peaks.

Transfer some whipped cream to piping bag and refrigerate it.

Add some cream to the chocolate mixture and mix well. Later transfer it to the whipped cream and mix till everything is well combined.

Fill in a piping bag and refrigerate.

Add Oreo biscuits to a blender and make into smoother powder.

In dessert cups, add Oreo powder layer and chocolate mousse alternately,

Top with whipped cream and dust some powdered Oreo and add a Oreo biscuit to it.

Refrigerate for 2 to 3 hours before serving.