As the name says, Mangalore Buns, is popular in Udupi/Mangalore either as breakfast or teatime snack. Buns are soft, fluffy, sweet puris made using bananas. So they are also called Banana Pooris. As it is little sweetish, it is consumed with spicy item like chutney, sambar, pickle.
Traditionally Buns are prepared using Maida/APF but I have shown you the recipe with Atta/Godhi Hittu