A grilled salad can be as simple as topping a green salad with some grilled vegetarian "chicken", or you can grill an entire salad with vegetables mixed with fresh greens and topped with dressing, as in this pictured Italian caponata salad
made with grilled zucchini and eggplant and tossed with vinegar and green olives.
Several lettuce greens work well on the grill too. Try grilling endive, halved romaine hearts, chard or cabbage just enough to get them a bit crisped and softened. Drizzle with salt, pepper and olive oil and you've got yourself the base of a grilled. Here's a few other recipes to try.
Grilled eggplant and olive caponata (pictured)
Grilled vegetarian "chicken" salad
Italian grilled olive and tomato panzanella (bread salad)
Goat cheese and grilled bell pepper summer salad
Balsamic eggplant salad