Preheat the oven to 325°F (163°C). Mix graham cracker crumbs with melted butter and press into the bottom of a 9-inch springform pan to form the crust.
Beat the cream cheese and sugar together until smooth and creamy.
Add eggs one at a time, mixing on low speed after each addition. Stir in vanilla extract.
Fold in sour cream and rainbow sprinkles gently to avoid melting the colors.
Pour the batter over the crust and smooth the top. Bake for 50 minutes or until the center is almost set.
Turn off the oven and leave the cheesecake inside with the door slightly open for 1 hour to cool gradually. Then refrigerate for at least 4 hours before serving.
Notes
Store leftovers covered in the refrigerator for up to 5 days. For best flavor, serve chilled.