Final answer:
A custard baked in a pastry shell is typically called a tart or quiche. These dishes are made with a pastry dough shell filled with a mixture of eggs and other ingredients and then baked.
Step-by-step explanation:
A custard baked in a pastry shell is commonly known as a tart or quiche, depending on whether it is sweet or savory. The process of making this dish involves creating a dough out of flour, butter, and water, which is then shaped into a shell and pre-baked or filled raw with a mixture of eggs, milk or cream, and other ingredients such as sugar, fruits, cheese, meats, or vegetables before being baked until set. Originating from various culinary traditions, such desserts are beloved for their creamy texture and rich flavor encased in a flaky pastry crust.