- Preheat oven to 325°F and line a muffin tin with paper liners. 
- Mix graham cracker crumbs with melted butter and press into the bottom of each cup. 
- Beat cream cheese and 1/2 cup sugar until smooth. 
- Add eggs one at a time, mixing after each. Stir in sour cream and vanilla. 
- Spoon the filling over the crusts and bake for 20–22 minutes, until set. 
- Cool, then refrigerate for at least 3 hours or overnight. 
- Just before serving, sprinkle each cheesecake with sugar and use a kitchen torch to caramelize the tops.