In a high-speed blender, combine the rolled oats, half of the banana, the whole egg, egg whites, vanilla protein powder, cinnamon, and baking powder.
Blend on high until the batter is completely smooth and the oats are finely ground.
Heat the ghee in a large non-stick skillet over medium-low heat, ensuring the surface is evenly coated.
Slice the remaining half of the banana into thin rounds.
Pour the batter into the skillet to form three or four medium-sized pancakes.
Gently press the banana slices into the wet side of each pancake while they are still cooking.
Cook for approximately 3 to 4 minutes until small bubbles form on the surface and the edges look set.
Carefully flip each pancake and cook for another 2 minutes, allowing the banana slices to become golden and caramelized.
Transfer to a plate and serve immediately with a dollop of Greek yogurt on the side.