Preheat your oven to 325°F (163°C). Line a muffin tin with cupcake liners.
Mix graham cracker crumbs and melted butter in a bowl. Press into the bottom of each liner to form the crust.
In another bowl, beat cream cheese and sugar until smooth. Add eggs one at a time, mixing just until combined.
Stir in sour cream and vanilla until the batter is silky.
Spoon the filling over the crusts and bake for 18-20 minutes, or until the centers are set.
Cool completely, then refrigerate for at least 2 hours or overnight.
Right before serving, sprinkle a teaspoon of sugar on each mini cheesecake and torch until golden and crackly.