What is the name of a novel centering on the theme of berry picking, baking pie, and dealing with death?

The story roughly follows a boy whose best friend has died. He remembers going berry picking with him, and the pies his mother used to bake. Now the boy struggles through the phases of guilt and blame etc, dealing with the death. Last I remember, the boy visits the mother of the deceased, and comforts her by eating her pie.

What is the name of a novel centering on the theme of berry picking, baking pie, and dealing with death?
Post this question at www.whatsthatbook.com. Hopefully, someone there will remember your book.