In a small dry skillet over medium heat, toast the pecans for 3-5 minutes until fragrant and golden brown, then set aside.
In a small saucepan, bring the water and sea salt to a gentle boil.
Stir in the rolled oats and ground cinnamon, reducing the heat to medium-low and simmering for about 5 minutes until most of the liquid is absorbed.
Slowly pour the liquid egg whites into the saucepan while whisking constantly to incorporate them into the oats without scrambling.
Continue to cook for another 2-3 minutes, stirring frequently, until the oats become thick, fluffy, and voluminous.
Remove from heat and stir in the vanilla extract to preserve its delicate aroma.
Transfer the oatmeal to a bowl and top with the non-fat Greek yogurt, toasted pecans, and a drizzle of maple syrup.