Preheat oven to 325 degrees F; foil-wrap springform pan.

Press cookie crumbs and butter into pan for crust.

Beat cream cheese, sugar, and cocoa smooth; add eggs individually.

Fold in most of chopped Reese’s; pour batter over crust.

Bake 55 to 65 minutes until set; cool gradually with oven door cracked.

Chill at least 4 hours; top with ganache drizzle and remaining Reese’s before serving.