In a medium bowl, whisk together the liquid egg whites, half of the Greek yogurt, vanilla extract, and half of the banana (mashed) until well combined.
Stir in the oat flour, ground cinnamon, sea salt, and baking powder until a smooth batter forms.
Heat a non-stick skillet over medium heat and lightly grease with half of the coconut oil.
Pour the batter into the skillet to form 3-4 pancakes and cook until bubbles appear on the surface, then flip and cook until golden brown.
Remove pancakes from the pan and set aside; add the remaining coconut oil and maple syrup to the same skillet.
Slice the remaining half of the banana into rounds and sauté in the syrup mixture for 1-2 minutes until caramelized and tender.
Plate the pancakes, top with the remaining Greek yogurt, and spoon the warm caramelized bananas over the top.