Looking through Lalsy's well produced doc of my list I realise that I have forgotten one of my favourite easy dishes.
I'll put it here & maybe Lalsy can copy & paste it onto the list. 
Butter beans & Bacon (for 2 people).
I tin butter beans, drained & rinsed.
Half a pint of cheese sauce made with a good strong cheddar + a tsp of Dijon mustard.
6 (or so) thin cut rashers of streaky bacon.
Heat the butter beans in the cheese sauce until piping hot. Put them in a flat ovenproof dish (or a couple of of individual chafing dishes) , put the bacon on top & put under the grill until the bacon is done - less than 5 mins.
Serve with crusty bread and/or salad.
V calorific, v easy & v comforting. A British tartiflette??