Squeeze the lemon juice over the bananas. Melt
the brown sugar
and butter in a medium skillet over medium-high heat. Place the bananas in the skillet cut-side down and saute, flipping carefully once color has developed on one side. Sprinkle the cinnamon
over the bananas
Remove the skillet from the heat and add the rum
. Carefully ignite with the flame from the stove or a match. As the flames begin to subside, carefully spoon the sauce over the bananas.
Prepare 4 serving dishes with a large scoop of vanilla ice cream
. Top with a banana slice and generously spoon the sauce
on top. Serve right away.