1 orange,2 tablespoons unsalted butter,3 tablespoons packed light brown sugar,1 vanilla bean, split lengthwise,1/4 cup orange juice,Kosher salt,3 ripe bananas, peeled, halved lengthwise and crosswise,1/2 cup dark rum,Whipped cream, for serving. Remove 4 strips orange zest. Squeeze the orange and strain the juice.Melt the butter with the sugar, orange zest and vanilla bean in a large skillet over medium heat until the sugar caramelizes, about 5 minutes. Remove from the heat and stir in the orange juice and a pinch of salt.Return the skillet to medium heat, add the bananas, cut-side down, and cook until glazed and golden, 1 to 2 minutes. Remove from the heat and divide among bowls.Add the rum to the pan and return to medium heat. Warm for a few seconds without stirring, then carefully tilt the pan so the rum ignites (if using an electric stove, hold a lit match near the sauce to ignite it). Spoon the flaming sauce over the bananas. Garnish with whipped cream and the glazed orange zest.