Place the rolled oats in a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the egg whites, Greek yogurt, half of the banana, cinnamon, vanilla, 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 lightly coat with a small amount of ghee or cooking spray.
Pour the batter into the skillet to form three or four medium pancakes, cooking until small bubbles appear on the surface.
Flip the pancakes carefully and cook for another 1-2 minutes until both sides are beautifully golden and firm to the touch.
While the pancakes finish, melt the 1 teaspoon of ghee in a separate small pan over medium-high heat.
Slice the remaining half of the banana into rounds and sauté them in the ghee for 2 minutes per side until they are caramelized and fragrant.
Plate the warm pancakes in a stack and top them with the caramelized banana slices before serving.