Preheat oven to 325°F (165°C). Grease a springform pan.
Mix graham cracker crumbs, sugar, and melted butter. Press firmly into the bottom of the pan and bake for 10 minutes. Let cool completely.
Beat cream cheese until smooth and creamy. Add sugar and mix well.
Add eggs one at a time, mixing gently after each addition.
Mix in sour cream and vanilla until just combined.
Pour filling over the cooled crust and smooth the top.
Bake for 50–55 minutes, until edges are set and center slightly jiggles.
Turn oven off, crack the door, and let cheesecake cool inside for 1 hour. Chill in fridge for at least 4 hours.