Preheat the oven to 325°F (163°C). Grease a 9-inch springform pan or line the bottom with parchment paper.
Make the Crust: In a bowl, mix graham cracker crumbs, sugar, and melted butter. Press firmly into the bottom of the pan. Bake for 10 minutes, then let it cool slightly.
Prepare the Filling: In a large mixing bowl, beat the cream cheese until smooth. Add sugar and vanilla extract, and mix until combined.
Add eggs one at a time, mixing on low speed.
Stir in sour cream until smooth.Fold in mini chocolate chips, ensuring even distribution.
Bake the Cheesecake: Pour the filling over the crust. Tap the pan gently to remove air bubbles. Bake for 50-60 minutes until the center is slightly jiggly but set around the edges.
Turn off the oven and let the cheesecake cool inside with the door slightly open for 1 hour.
Chill: Cover and refrigerate for at least 3-4 hours, or overnight for best results.
Serve: Drizzle with melted chocolate and top with whipped cream if desired. Slice and enjoy!