Preheat your oven to 375°F and lightly grease a small oven-safe baking dish with a small amount of ghee.
In a medium mixing bowl, whisk together the Greek yogurt, liquid egg whites, vanilla extract, and half of the ground cinnamon until the mixture is completely smooth.
Arrange the sliced peaches in an even layer at the bottom of the prepared baking dish.
Pour the yogurt and egg white custard mixture over the peaches, ensuring they are evenly covered.
In a separate small bowl, stir together the rolled oats, hemp seeds, remaining cinnamon, sea salt, maple syrup, and melted ghee until a crumbly texture forms.
Evenly distribute the oat crumble over the top of the custard layer.
Bake for 25 to 30 minutes, or until the custard is set and the topping has turned a golden brown.
Remove from the oven and allow the cobbler to rest for 5 minutes to thicken before serving warm.