Cook onion, garlic and celery in butter in large nonstick skillet, for 2 minutes. Add pine nuts; cook another 2 minutes. Add apricots, prunes and cherries; cook 1 minute or until vegetables are light-golden.
Stir in couscous; cook 1 minute. Add broth, salt and pepper. Bring to boiling. Immediately remove skillet from heat; cover; let stand 10 minutes. Fluff couscous with fork.