Preheat your oven to 325°F (160°C).
Line a muffin tin with cupcake liners.
In a bowl, mix crushed graham crackers, sugar, and melted butter.
Press the mixture firmly into the bottom of each liner.
In a large mixing bowl, beat the cream cheese until smooth.
Add sugar and vanilla extract, mixing until well combined.
Incorporate eggs one at a time, mixing after each addition.
Stir in sour cream until the mixture is creamy.
Pour the cheesecake batter over the crusts in the muffin tin.
Bake for 20-25 minutes until set, then let cool in the pan.
Refrigerate for at least 2 hours before serving.