I had seen this post on roasting strawberries and needed to try it. I actually tried the recipe multiple times, as evidenced by the photos below in different roasting pans. The round pie plate held one quart of strawberries; the rectangle, two.
Cut the strawberries in half if they are large. Most of mine were pretty small, as they were local berries. Add 1/4 cup of sugar per quart and stir.
Bake at 375 for an hour, gently stirring after a half hour. (Yes, it does seem like far too long to cook them, but it does work.)