Watalappam (also called Watalappan) is a coconut custard made of coconut milk, jaggery, cashew nuts, eggs, and various spices, including cardamom, cloves and nutmeg. This dessert is very popular in Sri Lanka; especially amongst ethnic Moors and Malays. It is believed to be of Malay origin and it gained popularity in the 1970s.
Beat the eggs in a mixer. Add the coconut milk, brown sugar, cardamom and cloves to the beaten eggs. Mix well. Add the mixture into a pot and steam for 20 minutes. Add the cashews.
Alternatively, the mixture can be poured into multiple small aluminum baking foils and then steamed for about 5–10 minutes.