03Core, seed and devein the green peppers, and cut them into one-inch pieces. There should be about two and one-half cups.04Heat the oil in a large heavy casserole and add the eggplant and zucchini. Sprinkle with salt and pepper. Cook, stirring often, over high heat until the vegetables start to brown, about five minutes.05Add the onions, green peppers and garlic. Cook, stirring, over high heat, about two minutes. Add the tomatoes and tomato paste, and stir to blend. Add the bay leaf, thyme and capers. Add salt and pepper. Bring to the boil and cover closely. Reduce the heat and let simmer 30 minutes. Stir in the parsley and remove from the heat.