Step #1 Preheat oven to 375°; peel pears & halve them vertically; with a melon baller or small spoon, scoop out the hard core of each.
Step #2 Melt butter in an 8- to 10-inch ovenproof skillet over med-heat/flame.
Step #3 Stir in the brown sugar & salt; add in the pears in a single layer, cut sides down.
Step #4 Spoon some of the butter mixture over the pears.
Step #5 Transfer the skillet to the oven & bake the pears until soft, 15-20 mins, basting once with the butter mixture while they bake.
Step #6 Remove the pears from the skillet & arrange them on a rimmed platter or In a large-ish shallow bowl.
Step #7 Return the skillet to the stovetop; mix in the cream, vanilla, & bourbon; bring to a boil & reduce by about half, until very thick, stirring & keeping a close eye on the mixture.
Step #8 Pour the sauce over the pears; Garnish with nuts & serve warm.