In a high-speed blender, combine the liquid egg whites, Greek yogurt, rolled oats, half of the banana, collagen peptides, cinnamon, vanilla, and baking powder.
Process until the batter is completely smooth and let it rest for 2 minutes to allow the oats to hydrate and thicken.
Slice the remaining half of the banana into thin circular coins.
Heat a large non-stick skillet over medium heat and melt half of the ghee to coat the surface.
Pour the batter into the skillet to form three or four pancakes, cooking for approximately 3 minutes until bubbles form on the surface and edges are set.
Flip the pancakes carefully and cook for another 2 minutes until golden brown, then remove them from the pan and plate.
Add the remaining ghee and the banana slices to the same skillet, searing for 1 minute per side until they are caramelized and fragrant.
Top the pancakes with the warm caramelized banana slices and serve immediately.