Combine ground lamb and garlic in medium mixing bowl; mix well.
Shape into 16 to 18 (1 -inch) lamb balls.
Place in 2-quart (12 x 7-inch) glass baking dish.
Add onion and celery.
Cover with plastic wrap.
Microwave on medium for 5 minutes.
Combine remaining ingredients in 4-cup glass measure; mix well.
Set aside Drain and rearrange lamb balls; pour on sauce.
Recover and continue cooking on medium for 8 to 10 minutes or until hot.
Let stand, covered, 5 minutes before serving.