Add the egg whites, oats, dairy-free milk and optional salt to a large microwave-safe bowl. Stir to combine.
Microwave for 45 seconds, then stir very well.
Continue microwaving in 45-second intervals, stirring after each interval, until the oats are thick, creamy, steaming and fully set, usually 3 to 5 minutes total.
Let the oats stand for 1 to 2 minutes to thicken. Add your preferred toppings and serve.
Use a bowl at least twice the volume of the mixture because egg whites and oats puff as they cook.
Stirring every 45 seconds prevents rubbery egg pieces.
For a creamier consistency, replace 2 to 3 tablespoons of thick protein milk with water and add a splash of milk after cooking.
Cook until hot, steaming and fully set. Microwave power varies.
Nutrition: Ingredient-by-ingredient calculation checked October 27, 2026 using USDA data and the named product labels. Values are estimates per serving, include all measured oil, and exclude extra toppings. Brand substitutions and cooking losses can change the result.The measured milk is dairy-free milk (8 g protein per cup), replacing the unspecified protein milk in the original estimate.