Begin by spraying a 9x13-inch baking dish with baking spray. Arrange the slices of bread in the pan, slightly overlapping each slice. Set aside.
In a large bowl, whisk together the pumpkin puree, eggs, milk, sugar, vanilla, salt, cinnamon, nutmeg, and cloves. Evenly pour this mixture over the bread. If needed, press the bread down to fully soak each slice. Then sprinkle with cinnamon.
Cover with aluminum foil and refrigerate overnight.
To bake, preheat your oven to 350 degrees Bake for about 60 minutes or until set. (Bake for 30 minutes covered; then remove the aluminum foil to finish baking.)
Sprinkle with powdered sugar before serving.
Slice to serve. Serve with cinnamon maple butter and pure maple syrup.