Recipes: Grilled caponata panini

Preparation:              Preparation time: 10 mins  Cooking time: 40 mins  Serving: 4 Ingredients:   Vegetables 2 medium zucchini, cut lengthwise into 1/2-in.-thick slices 2 medium yellow squash, cut lengthwise into 1/2-in.-thick slices 1 medium eggplant, cut lengthwise into 1/2-in.-thick slices 1 medium red onion, cut into 3/4-in. wedges 4 ounces mini bell peppers (about 8) 3 green...