Feel free to substitute the homespun variety in any recipe that stipulates shop - bought sunblush (though I'd use about half; the shop ones are heavier per tomato). Frankly, they're also wonderful eaten just as they are, with bread, cheese, or as a salad.
I also make them exactly the same way with large tomatoes, roughly chopped - glorious with tuna too. This makes a fabulous instant pasta sauce, too.
Recipe posted by Nigella