I had one last night (that I made while my wife was at work)
I put a tin or two of tuna in a bowl, with a jar of ready made Bolognese sauce (maybe a spicy one), a tin of chopped tomatoes, and mix it all together and heat it in the microwave.
Sometimes I put in some "easy garlic" or maybe a few drops of a spicy sauce (peri peri sauce for example), also maybe some sweetcorn from a tin). Last night we had some pepperami meat sticks in the fridge so I cut a couple up to give it some extra body.
I then cook the pasta in a saucepan, pour it all in a low dish, and grate some cheddar cheese over the top. Maybe also some parmisan cheese on the top as well.
Put it in the oven for only 15 or 20 minutes (the pasta has just been cooked and the sauce has been heated in the microwave so it does not need long in the oven).
Remove from oven, sprinkle on some more parmisan cheese and a quick and tasty meal.