Preheat oven to 350 degrees F. Spray an 9x13-inch baking dish with nonstick cooking spray; set aside.

In a large bowl, combine milk, butter, vanilla, sweetener and salt; microwave for 1-2 minutes or until butter has melted.

Remove from the microwave and whisk in egg whites, protein powder and cinnamon until well combined. Add the bread to the bowl and stir to coat.

Pour half the mixture into prepared pan. Sprinkle half the raspberries on top then repeat layers.

Bake, uncovered, for 30 minutes, or until the edges are lightly browned and custard is mostly set.

Whisk together all cream sauce Ingredients and pour on top before serving.