Place foil baking cup in each of 16 regular-size muffin cups or use a silicone muffin pan.
In small bowl, mix cookie crumbs and melted butter. Divide crumb mixture among cups. With back of spoon, firmly press cookie crumbs in bottom of each cup.
In large bowl, beat cream cheese until smooth. Gradually beat in 1 cup granulated sugar and the cocoa until fluffy. Beat in vanilla. Beat in eggs, one at a time, until well blended. Divide batter evenly among baking cups (cups will be almost full).
If you want, top with whipped cream, chocolate curls, chocolate sauce, fresh berries, or whatever your little heart desires.