3 roasted onion pecorino salad Recipes

eggplant , cut lengthwise into 1-inch-wide slices, olive oil, red onions , cut into 1-inch pieces, red-skinned potatoes , cut into 1 x 3/4-inch pieces, olive oil, red bell peppers, cut into 1 1/2-inch squares, zucchini , halved lengthwise, cut crosswise into 1 1/2-inch pieces, dijon mustard, balsamic vinegar, chopped fresh basil, heads radicchio , cut into 1 1/2-inch pieces, arugula, cut into bite-size pieces, coarsely grated pecorino romano cheese

button onions, halved, olive oil, balsamic vinegar, pecorino cheese, arugula (rocket), salt & freshly ground black pepper