The Show-You-Care Casserole 2.0

A few months ago, I got this email from reader Rebecca:
"I have no idea what to give to new parents or the bereaved--you know, those occasions in life when a casserole is all but mandatory. I want so badly to show that I care by offering simple nourishment, and all I have in my repertoire are a tired lasagna or straight-out-of-the-1950's tuna-noodle cas…