Actually, omnivores typically like veggie food that _looks_ like veggie food, not veggie food that tries to look like meat. When we had our wedding my spouse and I got a really good vegan catererer and the anti-veggie relatives found it great (even knowing it was not their usual fare).
I have had the most sucess with things in the 'uncheese cookbook' ... especially the vegan lasagna. Another thing that comes out well is franks 'n beans using veggie dogs. Using them in pigs-in-a-blanket for the occasional treat is good as well.
The problem is his resistance to 'odd' foods since all of them involve tofu or some other 'wierd' thing ... forget the fact that my omnivore friends laugh about tofu while licking the bowl clean when I make that lasagna.
His liking veggies is a good sign. Typically, vegetarian cooks know better than omnivores how to cook them so you would probably be able to do without heavy sauces. [The problem is more one of psychology: he THINKS he needs the sauce.]
Not sure about the fat content offhand, but you may want to try the occasional stew. Hey, even if he insists on a small amout of dead animals in there it would be one way to get him to eat his veggies and legumes. Tomato soup is probably a pretty safe bet too, and you can jazz that up if you want.