Mash half of the banana in a medium mixing bowl until mostly smooth.
Whisk in the egg whites, Greek yogurt, and vanilla extract until the mixture is well combined.
Fold in the oat flour, collagen peptides, ground cinnamon, baking powder, and sea salt until a consistent batter forms.
Heat a large non-stick skillet over medium heat and lightly grease with a small amount of ghee.
Pour the batter into the skillet to form three pancakes and cook for 3-4 minutes until bubbles form on the surface.
Flip the pancakes carefully and cook for an additional 2 minutes until they are golden brown and cooked through.
In a separate small skillet, melt the remaining ghee and maple syrup over medium heat.
Slice the remaining half of the banana and sauté in the syrup mixture until tender and golden.
Serve the pancakes immediately, topped with the warm caramelized banana slices.