Add butter, brown sugar, and maple syrup to a microwave-safe bowl, and microwave for 1-2 minutes, until the sugar is dissolved. Stir to combine.
Lightly grease a 9X13-inch pan with cooking spray.
Spread the brown sugar mixture in the bottom of the pan and arrange the bread cubes in a single layer over the top.
In a bowl or liquid measuring cup, whisk together the eggs, half-and-half, vanilla, and salt.
Pour the mixture evenly over the bread.
Cover the pan and refrigerate overnight (8 to 10 hours).
Remove the pan from the refrigerator, uncover, and place in the cold oven.
Preheat the oven to 350 degrees F. Once the oven reaches temperature, bake for 30-35 minutes, until the bread is golden and the caramelly syrup is bubbling.
Serve warm with sweetened whipped cream and fresh raspberries or strawberries.
