Place the rolled oats into a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the egg, egg whites, Greek yogurt, protein powder, cinnamon, baking powder, and sea salt to the blender and process until the batter is completely smooth.
Heat a large non-stick skillet over medium heat and melt half of the ghee to coat the surface.
Peel the banana and slice it into thin, even rounds.
Pour the batter into the skillet to form three or four small pancakes, leaving space between them.
Gently press several banana slices into the wet top of each pancake before the batter sets.
Cook for 2-3 minutes until bubbles form on the surface, then flip carefully so the banana side is face down.
Cook for another 2 minutes until the bananas are caramelized and golden brown and the pancakes are cooked through.
Plate the pancakes banana-side up, drizzle with the remaining ghee and maple syrup, and serve immediately.