Prep the pan: Line a mini muffin pan with 24 mini cupcake liners. Set aside.
Make the crust: Mix cookie crumbs, melted butter, and sugar until the texture resembles wet sand.
Press and set: Spoon about 1 teaspoon of crust into each liner.
Press firmly with the back of a spoon. Chill in the freezer for 10 minutes.
Whip the cream: In a cold bowl, whip 1/2 cup heavy cream to stiff peaks. Set aside.
Beat the filling: In another bowl, beat cream cheese, powdered sugar, vanilla, and a pinch of salt until smooth and fluffy.
Fold gently: Fold the whipped cream into the cream cheese mixture until just combined and silky.
Fill the cups: Pipe or spoon the cheesecake filling over the chilled crusts, nearly to the top.
Smooth with a small spoon. Chill 20–30 minutes.
Make ganache: Heat 1/2 cup cream until steaming (not boiling). Pour over chopped chocolate, let sit 2 minutes, then whisk until glossy.
Top with ganache: Spoon a small dollop of ganache over each cup, tilting the pan to spread.
Add garnish: While the ganache is soft, add berries, nuts, or a pinch of flaky salt.
Chill to set: Refrigerate at least 45 minutes, or until the layers are firm.
Serve: Keep cold until party time.
Peel the liner and enjoy in 2–3 bites.