The next morning, preheat oven to 350 degrees F. Remove the dish from the refrigerator and let sit on counter for 20 minutes before baking. Bake covered for 30 minutes, remove tin foil and bake another 30 minutes.
In a saucepan, combine the sugar, cornstarch and water, mix well. Stir in the strawberries. Cook over medium heat until mixture bubbles and thickens. Serve over warm french toast. Top it with some fresh whipped cream!