Mix all the ingredients except the cranberries together in a large bowl, working the mixture with your fingers until it is well blended and crumbles to about the size of peas. Pat half of this mixture firmly on a cookie sheet and spread the cranberry sauce over it. Sprinkle the rest of the crumbs over the top and to the edges. Pat gently but firmly. Bake in a 375 degree F oven for 30-40 minutes. Cut in squares while still warm, and serve with ice cream or whipped cream.