Was it some form of baklava?
I’ve had pomegranate baklava before and it had a walnut on top. It’s a dessert so it is sweet.
This is just a guess. Whatever it is sounds tasty though.

I think you may mean koliva. Here is the wikipedia link:

http://en.wikipedia.org/wiki/Koljivo

Here is another description of it:

The Orthodox, ever mindful of the importance of the physical symbol, are not content to let words and emotions alone carry the memorial theme of remembrance and the promise of resurrection. At the memorial service an ancient sweet confection is prepared, blessed, and distributed to the people. This is the koliva, boiled wheat kernels, prepared and embellished. This confection (which is so typically eastern Mediterranean) is prepared by the family of the deceased (or by others skilled in its preparation) and brought into the church. It consists of wheat kernels which are boiled and partially dried, to which is added raisins, chopped nuts, pulverized sweet bread, spices such as cinnamon and cumin, and pomegranate seeds. The whole dry mixture is mounded in a tray and topped with a smooth coating of powdered sugar, whose surface is often decorated with a cross, the initials of the deceased, or other embellishments.
From: http://www.constantine-helen.org/Afterlife.html