Warm pasta salad with italian turkey sausage

Pasta and macaroni Italian cuisine

Nonstick cooking spray 5 tablespoons olive oil 6 tablespoons red-wine vinegar 2 garlic cloves, minced 1 teaspoon dried oregano ¾ teaspoon salt ½ teaspoon black pepper 4 plum tomatoes, halved lengthwise 1 eggplant (1½ pounds), cut into ½-inch slices 1 large red onion, cut into ½-inch slices 2 hot or sweet Italian sausages 8 ounces wagon-wheel pasta