Preheat your oven to 325°F (160°C) and line a cupcake pan with liners.
In a bowl, mix graham cracker crumbs, sugar, and melted butter until combined.
Press the mixture into the bottom of each cupcake liner to form a crust.
In another bowl, beat the softened cream cheese until smooth.
Gradually add sugar and vanilla, continuing to mix until well combined.
Add eggs one at a time, mixing on low speed after each addition.
Stir in sour cream and flour until just combined.
Pour the cheesecake batter over the crust in each liner, filling them about 2/3 full.
Bake for 20-25 minutes until set but slightly jiggly in the center.
Allow to cool and refrigerate for at least 2 hours before serving.