A great way to get the guys involved is to have one of the meetings before be all about food Is there a teen boy who doesn't love to eat?
We have done presentations for Scouts and I always bring the dry items for a couple recipes, have the guys come up and help me, make a massive mess then they get to eat it all. No one is bored, no whining...rather they are excited. Heh!

http://www.trailcooking.com/recipes/pizza-ramen That is always a favorite :-) http://www.trailcooking.com/recipes/pizza-pot Is another one. So are http://www.trailcooking.com/recipes/cheesy-bacon-mashers
Lots of easy yet tasty meals they can do with only hot water