I'm not a youngen but some fun and easy foods I'd think of would be pasta bake

Pasta, cheese, brocoli, yum.
Vegetarian lasagne is an awesome meal. Not easy though but it could be something to make for a family meal, fun and rewarding.
One of my fav easy meals... instant noodles (like 2 minute noodles) cook em up then fry some onion and mix veg (i just use a frozen packet) with curry powder.. quick, easy, yummy. Like a poormans singapore noodles
Mexican!!! A good way to get some beans in. I make an easy chili con vegie with salsa, refried beans, kidney beans (all tinned

) and then some fresh onion and capsicum.. fry it all up, yumm and easy and good with brown rice or oven baked in tortillas!!! Yumm
I think there is a really good link for easy veggo meals but it is slipping my mind, i'm sure someone else here will post it