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These can be used as garnishes or toppings for salads and other dishes. Freezing the entire hard-boiled egg is not recommended as the egg whites will become rubbery and tough. The thawing process might also cause the egg to become discolored. Write the date on the container or freezer bag; this will make it easy to track how long the egg yolks have been in the freezer, ensuring that you use the eggs within the 3-month time frame. After boiling, peel the eggs, remove the yolks, and package. The yolks should be frozen immediately after the eggs have been boiled. This will help lower the risk of the yolks becoming contaminated. Many people find it easier to separate the yolks and the whites before boiling.That way the yolks can later be frozen,and the whites can be used in other dishes, such as chocolate mousse. If boiling the yolks only, place the yolks in a saucepan, then cover with enough water to cover the yolks. Quickly bring the water to boiling. Remove the pan from the heat, cover it, and let it stand for 11-12 minutes. Remove the yolks with a slotted spoon and drain them well before placing them in the freezer bag or container. If the egg yolk has an unpleasant aroma, discard it as it has probably gone bad.

Summary:
Freeze only the cooked yolks of hard-boiled eggs. Place the hard-boiled egg yolks in a sealed container or freezer bag. Consider separating the yolks before boiling. Use the frozen egg yolks within 3 months for best quality.