What is the name of the Chinese sweet bun with egg in it?!

I've had it at a Dim Sum restaurant before, but can't remember the name...It was smaller than Cha Sha Bao and had only sweet, goey egg on the inside. It was delicious!

I'm about to go to the Chinese bakery by my house to buy some Cha Sha Bao, and I want to see if they will have the sweet egg buns as well. :)