A few things, not necessarily the quickest of foods to prepare but damn good all the same. First up is your own Mother's roast dinner, nothing in the world beats it. Roast meat, can be beef, gammon, lamb, even chicken or turkey. Then some lovely roast potatoes, I would personally go with maris pipers king edwards. Then some carrots, beans or garden peas, maybe some broccoli thrown on too and of course a great big crispy yorkie pud on the side. To finish off, drizzle a big load of bisto all over it. Then put on whatever sauce goes with the appropriate meat, mint for lamb, stuffing for turkey etc.
Other comfort foods for me include a garlic baguette and also crispy duck in pancakes with cucumber, spring onions and hoisin sauce.