What is the base of cream pie?

The base of a cream pie typically consists of a pie crust, which can be made from various ingredients like flour, butter, and sugar for a traditional pastry crust, or crushed cookies mixed with butter for a graham cracker crust. The filling is usually a rich and creamy mixture that may include ingredients like milk, sugar, cornstarch, and egg yolks, often flavored with vanilla or chocolate. After baking the crust, the filling is poured in and chilled, usually topped with whipped cream before serving.