After you’ve stuffed winter squash, made soup, and roasted chunks, there are still many more ways to prepare it. A French gratin is one. This simple dish typically features potatoes or another starchy vegetable topped with breadcrumbs, cheese, and butter or cream. The recipe will work with many squashes. Before you bake them, steam the slices, which tremendously cuts oven time and lets you use thicker pieces. With a variety like butternut or crookneck, steam the larger disks for a minute or two longer than the thinner slices that come from the area surrounding the seeds.