Add all of the ingredients for the spiced rum maple syrup to a small skillet. Bring to a full boil, then reduce the heat slightly and allow the mixture to simmer, stirring occasionally, until alcohol has cooked off, and syrup is thick, about 2 to 5 minutes. Remove from heat and set aside until ready to use.
Prepare the Bananas Foster:
Heat the butter in a small non-stick skillet over medium heat. Slice the bananas in ¾-inch rounds, and place them on the hot skillet. Cook 1 to 2 minutes, until bananas have begun to soften and are turning brown. Add the spiced rum syrup, flip the bananas carefully (they will be delicate!), and cook an additional 2 to 3 minutes, or until bananas are very soft and caramelized.
Bring it All Together:
Serve heaping bowls of chia seed pudding with caramelized bananas, walnuts, and a drizzle of spiced rum syrup. Save any remaining syrup for your next pancake conquest!