Preheat your oven to 325°F (160°C).
In a bowl, combine crushed graham crackers and melted butter.
Press the mixture into the bottom of a muffin tin lined with paper liners.
In a large mixing bowl, beat the cream cheese until smooth.
Add the sugar and vanilla extract, mixing until well combined.
Incorporate the eggs one at a time, blending until just mixed.
Stir in the sour cream until smooth and creamy.
Pour the cheesecake mixture over the crust in each muffin tin.
Bake for 20-25 minutes or until set but slightly jiggly in the center.
Remove from the oven and let cool before refrigerating for at least 4 hours.