Preheat oven to 350 degrees F. Coat a 9x13 pan with non-stick cooking spray, or grease with butter.
In a medium size mixing bowl, beat the eggs until frothy. Then add vanilla, milk, and half and half, and blend well. Add cornstarch and sugar, mix well.
Break hamburger buns into pieces and place in greased pan. Sprinkle raisins evenly over the bun pieces.
Pour egg mixture over the torn buns and raisins. Use the back of a spoon or your clean hands to press the egg mixture in with the mixture.
Bake for approximately 55 minutes or until center is set and top is golden. Let rest while you make the Rum Sauce.
Butter Rum Sauce
Melt Butter in a small saucepan. Add sugar, and cook on medium-low heat for 2 minutes, stirring with a small whisk, or spoon.
Add half-and-half and rum and cook for 5 more minutes, or until slightly thickened.
Serve warm over bread pudding. Enjoy with ice cream!
Notes
Nutritional estimation doesn't include ice cream
You can skip the rum if desired.
No hamburger buns? Use cubed bread like French bread, brioche, or challah.
Want to get fancy? Swap raisins for chocolate chips or chopped pecans.
This recipe also makes great individual portions if baked in ramekins on a baking sheet.