In a high-speed blender, combine the dry oats, egg whites, Greek yogurt, cinnamon, baking powder, vanilla extract, and sea salt.
Blend on high for 30-45 seconds until the batter is completely smooth and the oats have transformed into a fine flour consistency.
Slice the half banana into thin, even rounds.
Heat a large non-stick skillet over medium heat and add the ghee, swirling to coat the pan once melted.
Arrange the banana slices in the skillet and sear them for about 1 minute until they start to soften and turn golden.
Pour the pancake batter directly over the banana slices to create 3 or 4 medium-sized pancakes.
Cook for 3-4 minutes until bubbles appear on the surface and the edges look set.
Carefully flip each pancake and cook for an additional 2 minutes until the bottoms are golden brown and the center is cooked through.
Slide the pancakes onto a plate and serve immediately while the caramelized bananas are warm.