Cut the bread, with crusts, into 1/2-inch cubes. Spread on a tray to thoroughly dry, 1 to 2 hours, or dry in a 250 degree oven for 30 to 45 minutes.
Mix the cucumbers, onion, tomatoes, olives and cheese together in a bowl. Add the remaining ingredients and the bread cubes. Toss well, cover and chill 30 minutes. Serve cold on lettuce-lined plates.
c.1996, M.S. Milliken & S. Feniger, all rights reserved