pumpkin pie bread pudding

1 package hamburger buns (8 buns) (or 12 cups day-old bread cubes)
6 egg yolks
2 (15 oz) cans pureed pumpkin
5 cups milk (2.5 cans full)
large pinch salt
1 cup white sugar
1/2 cup brown sugar
1 tbsp vanilla extract
1/2 tbsp orange extract
1 tbsp cinnamon
1/2 tbsp pumpkin pie spice

slice buns into cubes and bake in a low oven until dry, or use stale. put into a large pyrex dish.
in a mixing bowl, combine ingredients (excluding buns). beat until well combined. pour over dried bread and gently toss until all buns are well coated, making sure custard mix is evenly distributed.
bake in a preheated 350' oven for 1 hour or until top is browned.
serve with whipped cream or vanilla ice cream if desired.