Cook butter and sugar in a large skillet over medium heat until melted. Meanwhile, slice bananas in half lengthwise. Add to skillet and cook until bananas are tender, about 2 minutes. Carefully add rum and brandy and ignite. Spoon sauce gently over the bananas a few times and then serve immediately over vanilla ice cream.
Professional Recipe: This recipe was provided by a chef, restaurant or culinary professional and makes a large quantity. The Food Network Kitchens chefs have not tested this recipe in the proportions indicated and therefore cannot make any representation as to the results.