In shallow dish, whisk together soy sauce, oil, onion, garlic, ginger and pepper. Add lamb, turning to coat; let stand for 10 minutes.
Reserving marinade, place lamb on greased grill over medium-high heat; cover and cook, basting with marinade, for 5-7 minutes on each side for medium-rare or until desired doneness.
Season with salt to taste. Serve with saut‚ed zucchini slices and sweet potatoes.
Servings: 4