I would NOT microwave the omelette packet!! Very rubbery from micro!!
I shook up the packet mix, used a non- stick pan with some Pam, added the omelete and then added my sauteed veggies (about 1/2 cup). Cook over low to medium heat (NEVER cook protein packets above medium or they get rubbery and stick.)
The top will stay quite moist so when the rest is set, put the pan in the oven under broil just long enough to get the top to cook (a minute or two). Makes a perfect frittata!