Spray a 9×13-inch baking pan with nonstick cooking spray. Spread half of cubed bread in
the pan. Top with half of blueberries and strawberries. Add remaining bread and top with
remaining berries.
Whisk together eggs, milk, vanilla, orange zest, cinnamon and brown sugar in a medium
bowl. Pour custard mixture over bread and berries. Cover and refrigerate for at least 2
hours or overnight.
Preheat the oven to 350°F. Bake for 35-45 minutes or until top is lightly golden brown.