The problem with freezing cooked egg whites is that they simply will not taste as good as they would when fresh and will be less than satisfactory in terms of texture. According to Healthline, when it comes to boiled eggs, a common problem for many is the fact that they are forced to deal with rubbery egg whites after thawing them. Ugh. Raw eggs and uncooked egg whites, on the other hand, are a relatively safe bet and will not cause any trouble in terms of taste, texture, or flavor.
A Redditor lamented about freezing burritos with egg whites and being displeased with the results after thawing the dish, explaining that the egg whites were rubbery and mediocre. A smart commenter had simple, but honest advice to offer for next time. They wrote, “That happens to cooked egg whites. You shouldn’t freeze them. Just don’t use cooked whites next time.” Lesson learned!