Take a jar add oreo cookies and then crushed it in grinder.
Take a bowl add crushed cookies then add butter mix it well.
Take a serving glass add the cookie mixture in it's base press it and keep it in refrigerator for 5min.
Take a big bowl add whipped cream then add sugar and pineapple essence fold it.
Take another bowl add 1cup whipped cream then add melted chocolate fold it gently.
Take 2 piping bag add mouse in one bag and then add whipped cream in another one.
Take a glass out from the refrigerator then add mouse in all the glasses.
Top the mouse with whipped cream.
Sprinkle some chocolate chips and serve it chilled.