Wiktionary
egg tart
n. A baked pastry commonly made in Hong Kong, Macau and other parts of Asia consisting of an outer pastry crust that is filled with egg custard.
Wikipedia
Egg tart
The egg tart or egg custard tart (commonly romanized as dàn tǎ (Mandarin), dan that or dan tat) is a kind of custard tart found in Hong Kong, Portugal, England, and various Asian countries, which consists of an outer pastry crust that is filled with egg custard and baked.