1 cup (packed) light brown sugar
1/2 cup light corn syrup
3 tablespoons unsalted butter
1 1/2 teaspoons kosher salt
1/2 cup heavy cream
1 tablespoon bourbon (optional)
1 pound day-old rustic white bread, crusts removed, cut into 1/2" cubes (12 cups)
1/2 cup (1 stick) unsalted butter, melted
2 tablespoons plus 1 1/2 cups sugar
5 large eggs
4 cups heavy cream
1 1/2 tablespoons poppy seeds
Pinch of kosher salt
3 tablespoons bourbon
1/2 vanilla bean, split lengthwise
2 cups pecan pieces