Cut bread into 1-in cubes; place half in a greased 9 x 13" baking dish.

Cut cream cheese into 1-in. cubes; place over bread. Top with blueberries and remaining bread.

In a large bowl, beat eggs. Add milk and syrup; mix well. Pour over bread mixture. Cover and chill 8 hours or overnight.

Remove from refrigerator 30 minutes before baking. Cover and bake at 350 degrees for 30 minutes. Uncover; bake 25-30 minutes more or until golden brown and the center is set.

For sauce: Combine sugar and cornstarch; add water in a saucepan. Bring to a boil over medium heat; boil for 3 minutes, stirring constantly. Stir in blueberries; reduce heat. Simmer for 8-10 minutes or until berries have burst. Stir in butter until melted.

Serve over French toast.