The classic cold soup seems almost restrained next to this lusty dish — gazpacho ingredients are grilled, then tossed with pasta and cheese (some of the vegetables are puréed to make a tangy sauce that lightly cloaks the whole). The sausages are cooked separately, so this recipe will come in handy when there are vegetarians around.
Trim off bottoms and tops of bell peppers, then halve peppers lengthwise.
04Quarter onions lengthwise, leaving root ends intact. Brush onions, peppers, and zucchini generously with some seasoned oil.
05Put garlic on a double layer of foil and drizzle with some seasoned oil, then wrap tightly in foil, twisting to seal.
06Put vegetables on a large tray.
07Brush sausages lightly with some seasoned oil and put on a plate.
08Prepare grill for direct-heat cooking over medium-hot charcoal (medium-high heat for gas). Grill vegetables, garlic, and sausages, in batches if necessary, covered only if using a gas grill, turning occasionally (frequently for garlic), until tomatoes are charred and slightly wilted, 3 to 5 minutesutes; bell peppers are blackened in spots, 8 to 10 minutesutes; onions and zucchini are tender, 8 to 12 minutesutes; garlic is softened and caramelized in spots, about 10 minutesutes; sausages are browned and cooked thourough, 12 to 15 minutesutes. Transfer as cooked to a platter (or platters) and keep warm, covered.
09Peel peppers. Coarsely chop 2 bell pepper halves and 2 zucchini halves and transfer to a blender. Add garlic, 4 pieces of onion, vinegar, sugar, 3/4 teaspoon salt, 1/2 teaspoon pepper, half of tomatoes, and remaining 1/4 cup oil and purée until as smooth as possible.
10Transfer remaining tomatoes to a large serving bowl and keep warm, covered. Chop remaining peppers, onion, and zucchini and add to tomatoes.
11Meanwhile, cook ziti in a pasta pot of boiling salted water (3 tablespoons salt for 6 quarts water) until al dente. Drain in a colander, then add to grilled vegetables and toss with sauce. Sprinkle with herbs and cheese, then serve with sausages.