Recipes: Easy grilled ratatouille salad

Preparation:  Preparation time: 5 mins  Cooking time: 10 mins Serving: 4 Ingredients: 1 large red onion, cut into 1⁄4"-thick slices 1 red bell pepper, quartered, stems and seeds removed 1 medium eggplant, cut into 1⁄4"-thick planks 1 large Portobello mushroom cap, cut into 1⁄4"-thick slices 1  large zucchini, cut into 1⁄4"-thick planks 2  medium...