When a frozen meal package says "do not thaw," it is usually for food safety reasons. Cooking the meal straight out of the freezer is the intended and safe method to follow. There are a couple of reasons why the "do not thaw" instruction is provided:
Bacterial growth: When food is left at temperatures above freezing (typically 40°F/4°C or higher), harmful bacteria can multiply rapidly and potentially cause foodborne illness. Thawing the meal at room temperature or in the refrigerator could create a breeding ground for bacteria, which is why cooking from frozen is recommended.
Texture and quality: Some frozen meals are designed to cook best from frozen to ensure the desired texture and taste. Thawing and then cooking them may lead to uneven cooking, loss of flavor, or changes in texture.
By cooking the frozen meal directly from frozen, you can ensure that it reaches a safe internal temperature throughout and minimize any risks of foodborne illness. Follow the cooking instructions on the packaging, and make sure the meal reaches the recommended internal temperature for proper doneness.
If you accidentally thawed a frozen meal labeled "do not thaw," it's best to discard it and not refreeze it. Refreezing partially thawed food can lead to further bacterial growth and compromise food safety. Always follow the manufacturer's instructions for the best and safest results when preparing frozen meals.