In a small saucepan, combine the rolled oats, water, sea salt, and cinnamon over medium heat.
Bring to a gentle simmer and cook for 3-5 minutes until the oats begin to soften and absorb the liquid.
Lower the heat to low and slowly whisk in the liquid egg whites, stirring constantly to prevent the eggs from scrambling.
Continue to cook for another 2-3 minutes, whisking vigorously until the oatmeal becomes thick, creamy, and voluminous.
Stir in the vanilla extract and remove the saucepan from the heat.
In a separate small microwave-safe bowl, heat the mixed berries for 45-60 seconds until they are warm and have released their natural juices.
Transfer the oatmeal to a serving bowl and top with the Greek yogurt, warm berry compote, and hemp hearts.