Preheat oven to 325°F (160°C) and grease a springform pan.
Mix graham crumbs, melted butter, and sugar, then press into pan to form crust and bake for 10 minutes.
Beat cream cheese and sugar until smooth and fluffy.
Mix in sour cream, vanilla, and heavy cream until creamy.
Add eggs one at a time, mixing gently after each addition.
Fold in sprinkles carefully to prevent color bleeding.
Pour filling over crust and smooth the top.
Bake for 50–55 minutes until center is slightly set.
Turn off oven, crack door, and cool cheesecake gradually for 1 hour.
Refrigerate at least 4 hours or overnight before serving.