In a high-speed blender, combine the rolled oats, liquid egg whites, Greek yogurt, half of the banana, cinnamon, vanilla, baking powder, and sea salt until the batter is completely smooth.
Heat a large non-stick skillet over medium heat and add the ghee, swirling the pan to coat the surface evenly.
Slice the remaining half of the banana into thin, even rounds.
Pour the pancake batter into the hot skillet to form three or four medium-sized pancakes, leaving space between them.
Gently press the banana slices into the wet side of the pancakes and cook for 3 to 4 minutes until bubbles form on the surface and the edges look set.
Carefully flip the pancakes and cook for another 2 minutes until the banana slices are golden and caramelized.
Drizzle the maple syrup over the pancakes in the pan during the last 30 seconds of cooking to glaze the fruit before serving immediately.