Toad in the hole. You can make small amounts of that - easy.
Partially cook sausage on grill.
Make some batter for 1 person use 2 eggs - what I do is break the eggs in a cup, measure mentally where the egg came up to, then measure out the same volume in milk and flour. Whisk together with some salt. Then heat some oil up in a dish/pan in the oven as hot as it will go. Then put the batter in, then plop the sausages in. Put in hot oven until cooked.
Lnacshire hotpot - basically cottage pie but with sliced potatoes on top, not mash.
Cauliflower cheese, can serve that with a baked potato.
Gammon (this gammon slices in supermarket) with boiled potatoes and parsley sauce.
Steak and kidney pudding - the ready made ones to serve one, with mashed potatoes.
With veg on side - carrots, brocolli, green beans, peas. Thin older people prefer veg cooked a bit softer than we do nowadays (ime anyway)
Stew - cook onions, swede, potato and diced braising steak very long and on low heat with beef stock and seasoning. Serve with dumplings.