Preheat your oven to 350°F (175°C) and lightly grease a small oven-safe baking dish or large ramekin.
Cut the sprouted grain bread into 1-inch cubes and place them in a medium mixing bowl.
In a separate bowl, whisk together the liquid egg whites, Greek yogurt, vanilla extract, cinnamon, and sea salt until completely smooth.
Pour the egg mixture over the bread cubes, tossing gently to coat, and let it sit for 5-10 minutes to allow the bread to absorb the custard.
While the bread is soaking, slice the banana into 1/4-inch thick rounds.
Heat the ghee in a small non-stick skillet over medium heat, then add the banana slices and maple syrup.
Sauté the bananas for 2-3 minutes per side until they are golden brown and caramelized, then remove from heat.
Transfer the soaked bread mixture into the prepared baking dish and arrange the caramelized bananas evenly over the top.
Bake for 25-30 minutes until the pudding is set and the top is slightly crisp and golden.
Allow to cool for 5 minutes before serving warm.