Is it cheese sauce your OH won't eat or cheese? Mine eats cheese but not cheese/white sauce, you see. These ideas are an epic fail if it is cheese, sorry.
Meatball subs - split sub rolls, spread some tomato pasta sauce over the base top with 3 or 4 cooked meatballs, sprinkle with grated cheese. Close rolls and stick in oven at 180 for about 15 minutes until cheese is melted and rolls are crisp.
Chilli dogs wraps - spread flour tortillas with left over chilli, top with a hotdog and roll up. lay rolled up tortillas in a baking tray, top with a tin of tomatoes with chilli and a good sprinkle of grated cheese. Bake at 180 until hot through and golden.
sausage parcels - cook 8 sausages. Roll out a pack of puff pastry and cut into four squares. Spread each square with some caramelised onion chutney. Lay 2 sausages diagonally on each square and then fold the bottom corner up and the two sides in, so that you have a sort of open envelope. Bake until pastry is puffed and golden.
polenta in tomato sauce - make polenta by boiling 3 cups of water with a teaspoon of salt. gradually whisk in one cup of polenta. Cook, stirring until polenta is really thick. Pour it into a loaf tin and chill overnight until solid. next day, slice it up and cut into cubes. Put in a baking dish and pour over a tomato and garlic sauce (tinned toms, onion, garlic, pinch sugar, oregano) and sprinkle with a decent amount of grated cheese (or not). bake until hot and bubbly.
haggis pie - spread a tin of haggis over the bottom of a casserole dish, top with mashed carrots and then mashed potatoes. Bake for about 1/2 an hour until hot and browning.
steak sandwiches - fry some strips frying steak until done to your liking. Fry some onions, mushrooms and green pepper strips in the same pan until done. Pile into crusty rolls spread with butter and horseradish sauce, season to taste.