cauliflower cheese...i make mine with bacon on top
mac cheese you already mentioned but again i put in cutted up frankfurters or that mattisons smoked sausage
great bowl of soup with cheesey scones or french bread croutons
cowboy casserole...basically sausages with tinned stuff, baked beans or kidney, sweetcorn, tinned tomatoes, tinned mushrooms, tinned potatoes, brown the sausages and just fling in the rest of it and into the oven till it's all bubbling.
and a very old childhood favourite, fishfinger pie, tin of beans into a big flattish dish, half cook your fish fingers and put on the top, pile over mash, fresh or left over, some grated cheese and into the oven till the potato is golden.
twice baked potatoes...bake them, scoop out the innards, add cheese/ham/sweetcorn relish, dollop of mayo or soured cream and maybe some cheese cubes, pile it all back into the skins and back into the oven with some more grated cheese n top. Variations on this theme include PInk Potatoes....use baked beans, it turns the potato pink, or you can use Chicken pie filling, although that's really quite expensive these days!
It's been ages since I did most of the above...real quick easy nursery teas! Although we are having cauli cheese tonight!
If you want to cook properly then a real fish pie is nice, or make a chicken and mushroom pie, or steak and ale?? lasagne? Bolognaise? Chilli??