Place the rolled oats into a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the liquid egg whites, half of the Greek yogurt, half of the banana, baking powder, cinnamon, vanilla, and sea salt to the blender.
Blend the mixture on medium speed until the batter is completely smooth and well-combined.
Heat a large non-stick skillet over medium-low heat and lightly coat the surface with half of the ghee.
Pour the batter into the skillet to form three or four small pancakes, cooking for 3 minutes until bubbles form on the surface, then flip and cook for another 2 minutes until golden.
While the pancakes are cooking, slice the remaining half of the banana into thin rounds.
In a separate small skillet, melt the remaining ghee over medium heat and sauté the banana slices for 1 minute per side until they are caramelized and fragrant.
Stack the warm pancakes on a plate, top with the remaining cold Greek yogurt, and finish with the caramelized banana slices.