Preheat oven to 350 degrees Fahrenheit. Spray an 8-x8-inch baking pan with cooking spray; set aside.
Place bread cubes in a large bowl; sprinkle with cinnamon. In a medium bowl, whisk egg substitute, egg whites, sugar substitute, fat-free or low-fat lactose-free milk and vanilla until blended.
Pour over bread, sprinkle with raisins and stir gently to mix.
Pour mixture into prepared pan.
Bake 45 minutes in preheated oven or until top is puffed and golden and tester comes out clean.
Cut into squares and serve warm with vanilla pudding sauce.
Whisk egg, egg white, sugar and cornstarch together in a medium saucepan.
Whisk in fat-free or low-fat lactose-free milk.
Cook over medium-low heat, stirring constantly, until mixture thickens and begins to bubble, about 10 minutes.