Most pasta dishes, particularly if I use fusilli or something they can easily pick up with their fingers. I use this to my full advantage and blitz loads of veg into tomato sauces. Also, tuna & sweetcorn pasta, pesto/pea pasta, or pasta with philly & peas/sweetcorn.
Jamie's 30 min chicken pie, or the filling with rice.
Mine aren't great with meat, but will eat sausages, so toad-in-hole, sausages, mixed beans, onions in gravy & mash, sausages/veg in tom sauce with pasta, pork & rice one pot (BBC good food) are all good.
Also, slow-cooker meats go down better. I do the BBC good food beef & ale pie filling in the SC and serve with mash rice (or pastry!) and that gets eaten. Pork with apples/juice or cider, and lamb with onions and mint sauce.
Both DDs would happily live off cheese & crackers or ham sandwiches tho!