1In large bowl, beat eggs, egg yolk, granulated sugar, 1 1/2 cups milk, the whipping cream, vanilla and cinnamon with whisk. Stir in 3 cups of the banana bread cubes. Let stand 20 minutes.
2Heat oven to 325°F. Grease 8-inch square (2-quart) glass baking dish with shortening or cooking spray. Pour banana bread mixture into baking dish. Top with remaining 1 cup banana bread cubes; sprinkle with cinnamon-sugar.
3Bake 55 to 65 minutes or until puffed and golden (center will not be completely set). Cool 5 minutes. Meanwhile, in small bowl, mix peanut butter, 1 tablespoon milk and the powdered sugar. Drizzle over hot bread pudding. Serve immediately.