Pastel de Belém (plural: Pastéis de Belém) is a Portuguese egg tart pastry.
They are common in Portugal, the Lusosphere — Brazil, Angola, Mozambique, Cape Verde, São Tomé and Príncipe, Guinea-Bissau, Timor-Leste, Goa, and Macau — and countries with significant Portuguese populations, such as Canada, Australia, Luxembourg, the United States, and France, among others.
It is believed that pastéis de natas was created before the 18th century by Catholic nuns at the Jerónimos Monastery (Portuguese: Mosteiro dos Jerónimos) of Belém, in Lisbon.
The Casa Pastéis de Belém in Lisbon was the first place outside the convent selling the original creamy dessert, after the monastery was closed in 1820s, and there they are called pastéis de Belém, after the name of the area and its famous bakery.
Since 1837, locals have gone there to get them warm out of the oven and sprinkled with the cinnamon and powdered sugar.
These are very popular, with tourists literally waiting hours for them.