Puree of Acorn Squash and Dried Plum Soup Dec 31, 1999 INGREDIENTS:½ cupbutter 2large onions, coarsely chopped 4 clovesgarlic, finely chopped 2 acorn squashes (about 3 lbs.), peeled, seeded and chopped into 1-in. pieces 2potatoes, peeled and cut into 3/4-in. pieces(about...