Here is a slight variation on the sausage and Swiss chard sauteé so common in our house. This recipe calls for a base of creamy polenta underneath the asparagus and Swiss chard available in such abundance this time of year. As noted below, and as recounted so memorably in Bill Buford’s Heat, the polenta only improves from a long, slow cooking time. Also, if you’re going to the trouble of making polenta, you might want to double the batch, and use it as a base for any number of sautées, polenta cakes, or the like through the rest of the week.