Boil 100g pasta per person, preferably those ones that look like sea shells. Pour a tin of diced tomatoes per person into a bowl with some basil, a good amount of salt and pepper and a drained can of tuna. Once the pasta's done throw into a colander and strain it. Empty the sauce bowl into the pan you used for the pasta, bring it to a boil for a couple of minutes and dump the pasta back in. Give it a stir every once in a while to make sure it's all evenly-distributed.
Pour it into a couple of bowls, top with grated cheddar and serve with garlic bread. Boom, simplest meal you can ever make.