Crush cookies into fine crumbs, mix with melted butter until it resembles wet sand. Press into a springform pan and chill for 30 minutes.
Melt chocolate chips over medium heat, stirring constantly. Let cool for 10 minutes until warm, not hot.
Beat cream cheese, powdered sugar, and vanilla until fluffy. Slowly mix in cooled chocolate. Fold in chopped Snickers.
Stir pink food coloring into a small portion of filling, then mix it back in for a swirled or full pink look.
Whip heavy cream until stiff peaks form. Stop before it turns grainy.
Gently fold whipped cream into the cheesecake mixture to keep it light and airy.
Spread filling over crust, smooth the top, cover, and refrigerate for at least 4 hours or overnight.
Unmold cheesecake. Add whipped cream swirls, M&Ms, and extra Snickers on top. Serve chilled.