A big hit at Halloweenie 2008! (I used french bread - one very large loaf yields enough bread cubes - and omitted the golden raisins and powdered sugar.) The caramel sauce may be made in advance and reheated . . . and is good on LOTS of other things (ice cream, cheesecake . . .).
2 cups half and half
1 15-ounce can pure pumpkin
1 cup (packed) plus 2 tablespoons dark brown sugar
2 large eggs
1 1/2 teaspoons pumpkin pie spice
1 1/2 teaspoons ground cinnamon
1 1/2 teaspoons vanilla extract
10 cups 1/2-inch cubes egg bread (about 10-ounces)
1/2 cup golden raisins
1 1/4 cups (packed) dark brown sugar
1/2 cup (1 stick) unsalted butter
1/2 cup whipping cream
For bread pudding:Preheat oven to 350°F. Whisk half and half, pumpkin, dark brown sugar, eggs, pumpkin pie spice, cinnamon and vanilla extract in large bowl to blend. Fold in bread cubes. Stir in golden raisins. Transfer mixture to 11x7-inch glass baking dish. Let stand 15 minutes. Bake pumpkin bread pudding until tester inserted into center comes out clean, about 40 minutes.
Meanwhile, prepare caramel sauce: Whisk brown sugar and butter in heavy medium saucepan over medium heat until butter melts. Whisk in cream and stir until sugar dissolves and sauce is smooth, about 3 minutes.
Sift powdered sugar over bread pudding. Serve warm with caramel sauce.