Preheat oven: Preheat your oven to 325°F (163°C). Line a 12-count muffin pan with cupcake liners.
Make the crust: In a mixing bowl, combine graham cracker crumbs and sugar. Stir in melted butter until the mixture resembles wet sand. Divide evenly between the liners and press firmly into the bottoms.
Bake crust: Bake the crusts for 5 minutes. Remove from oven and set aside. Keep oven at 325°F.
Prepare filling: In a large bowl, beat the softened cream cheese and sour cream until smooth and creamy. Add in sugar and vanilla extract and mix until well combined.
Add eggs: Add the eggs one at a time, mixing on low speed just until incorporated. Do not overmix to avoid incorporating too much air.
Fill the cups: Evenly divide the cheesecake batter among the crusts, filling each nearly to the top.
Bake: Bake for 17 to 20 minutes, or until the tops are set and just slightly puffed.
Cool: Allow to cool in the pan for 1 hour, then transfer to the refrigerator and chill for at least 3–4 hours or overnight before serving.