White bean and tomato soup

My grandmother never really liked to cook.  She did it, of course, for many years out of necessity--in the pre-feminist 50's and 60's, with a husband and three daughters to feed, cooking was an inevitability.  And as a good Jewish grandmother, conditioned to shower her family with love in form of food, she continued to make meals for us whenever we visited.

But with the rise of packaged foods, as her children and grandchildren have grown independent and her body has slowly wound down, she's stopped cooking on her own.  Now, at age 87, with a 94-year-old strict-vegan husband, her repertoire in the kitchen is limited to cocktails in the evening and fruit salad in the morning.  Most of her recipes were handed off to my mother long ago; they're Mom's recipes now, and that's how I remember them.

But there's one recipe I do remember well from her kitchen, the only real "grandmother's recipe" I have: white bean and tomato soup.