01 - 
                Use cooking spray to grease the bottom and sides of a 9x13 pan; set aside.
              
              
              
                02 - 
                Cut the bread into 1.5-inch cubes until you have about 12 cups. Add about 2/3 of the bread cubes into the bottom of the dish.
              
              
              
                03 - 
                In a small bowl, combine the cream cheese and 1/3 cup sugar and stir until smooth.
              
              
              
                04 - 
                Spoon the cream cheese mixture over the first layer of bread cubes in dollops. Sprinkle the raspberries over the mixture, followed by the remaining bread cubes. Set aside.
              
              
              
                05 - 
                In a large bowl, whisk the eggs. Then whisk in the milk, 1/2 cup sugar, and vanilla.
              
              
              
                06 - 
                Pour the egg mixture over the bread and press the bread cubes down to ensure each cube absorbs liquid. Cover the casserole with a lid or plastic wrap and refrigerate overnight.
              
              
              
                07 - 
                Preheat the oven to 350°F (175°C).
              
              
              
                08 - 
                Bake the casserole uncovered for 45-50 minutes until the internal temperature reaches 160°F (71°C) and the top is golden brown.
              
              
              
                09 - 
                Remove from the oven and let it rest for a few minutes. Sprinkle with powdered sugar, if desired, and serve with maple syrup.