For best results, place the sealed package in the refrigerator to thaw about half a day before your meal - overnight if you want it for lunch, in the morning if it’s for dinner. If your plans change, the chilled and still sealed package will last up to 3 days in the refrigerator.
If you’re in a hurry, put the frozen package in a lukewarm water bath for 20 minutes.
Remove vegetables from the package and heat in a pot (medium heat, with lid, stirring occasionally, about 5 minutes) or in a suitable container in the microwave (800W, about 5 minutes). If necessary, loosen with a little water. Season with salt and olive oil or in any other way you like.