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, cinnamon, sea salt, and vanilla extract to the blender, then process until the batter is smooth and aerated.
Peel the banana and slice it into 1/4-inch thick rounds.
Heat a large non-stick skillet over medium heat and melt the ghee, swirling to coat the surface evenly.
Place the banana slices in the skillet and sear for 1-2 minutes per side until they become fragrant and deeply caramelized.
Remove the bananas from the pan and set aside, then pour the pancake batter into the skillet to form three or four small rounds.
Cook the pancakes for 2-3 minutes until bubbles form on the surface, flip, and cook for another 1-2 minutes until golden brown.
Plate the pancakes and top with the warm caramelized bananas to serve.