My 16yo is autistic and has so many issues over certain foods. Tomatoes are a no, even ketchup, so spag bol is a no go, but the sauce on pizza is ok and lasagne is ok. I also do a cheeseburger pasta that has tomato puree in it but I think it's the amount of cheese against the tomato that makes these things ok.
Other things I can make for all of us:
Toad in the hole
Roast dinner
(No potatoes or gravy for 16yo with these though)
Cheesy pasta
Creamy spinach pasta (I wilt a whole bag of spinach and blend it until smooth then mix with a tub of cream cheese and add some seasonings/stock until it's a nice pasta sauce consistency).
I also make up my own pasta or risotto dishes with chicken leftovers, often adding cream cheese to the pasta or leeks to risotto or I'll make a basic white sauce with whatever thrown in to the sauce too, sometimes served with normal rice rather than pasta/risotto.
Scampi or anything with prawns (if we have a prawn cocktail though then DC will just eat the prawns, no sauce or lettuce).
Steak pie (just buy it from the butcher though) or a supermarket chicken pie is ok as long as there isn't too much gravy in it.
Burgers.
Tacos (no spice for everyone else but I add hot sauce to mine).
Stir fry with noodles (limited veg for DC, carrots and sweetcorn are ok and I can usually get away with a small amount of bean sprouts but not too many).
For lighter dinners then French toast or toasties always go down well. I sometimes make French toast out of a cheese sandwich but not very often, this is the only way DC will eat eggs though.