Serve warm with a dab of butterscotch sauce.
- Preheat oven to 350°F.
- Combine eggs, milk, vanilla, and sugar in a mixing bowl.
- Break bread into chunks or cut into cubes.
- Add bread to egg mixture along with raisins and whiskey (optional).
- Pour mixture into a buttered 1 ½-quart baking dish.
- Bake until top is golden-brown and puffy (Approximately 40 minutes).