Sandi:
I have 2 boys (21 and 15) and they pretty much eat what I make. I've lightened up our family recipes and they don't have a clue and most of the time I eat what I make them just smaller portions and more vegetables or a salad. If it's something they don't like they have the option of making something themselves but 99% of the time they eat what I fix for dinner and have found that they like a lot of my "new" recipes.
I've been a LT member 8 years now, work full-time and also work part-time at Weight Watchers as a receptionist. I have found that planning is key. You may want to ask your kids what types of meals they would like and go from there. A lot of recipes can be lightened without altering the taste. As I said, I don't tell them and they can't tell the difference