Pumpkin Bread Pudding with raisins

3 tablespoons unsalted butter , softened 5 eggs 2 cups pumpkin puree 3 cups half-and-half 1/2 cup dark brown sugar 1 cup sugar 3 tablespoons vanilla extract 1[...]

unsalted butter , room temperature, for ramekins 6 tablespoons dark brown sugar 1 cup raisins 1/3 cup Bourbon 1/3 cup hot water 1 (15 ounce) can pumpkin puree[...]