"Thomas" > wrote in message >...
> I have tried to cook an omelette by using one of those plastic trays
> designed especially for doing omelettes in the microwave.
>
> However, the omelette came out rubbery and tough. Any ideas how to make it
> lighter and fluffier?
>
> Many thanks in advance.
>
> Thomas

Thomes, it sounds like too much heat or too long a time.
Suggestions; add a tablespoon or two of water; reduce heat if your
machine allows (try 50% setting); shorten the cook time by about 20%

Let us know how you make out.

Ernie