Place bread pieces in a 7X11-inch greased pan. (Or use a casserole dish that is slightly smaller than a 9x13-inch)
In a medium bowl, whisk together eggs, milk, and 1/2 cup Butterscotch sauce.
Pour egg mixture over bread pieces. Press down on the bread pieces so that they absorb the liquid evenly. Cover an refrigerate at least 90 minutes or overnight.
Preheat oven to 425 degrees.
In a small bowl mix together melted butter, brown sugar, and 2 tablespoons Butterscotch sauce. Mix in graham cracker pieces.
Sprinkle graham cracker mixture on top.
Bake for 25 minutes. Serve drizzled with more Butterscotch sauce or maple syrup.