Reserve 1 1/2 cups dip as serving sauce. In a large resealable plastic bag, combine remaining 1 cup dip, lamb,
zucchini, and onion. Close and shake to thoroughly coat meat and vegetables. Let marinate 30 minutes at room temperature. (Can be stored in refrigerator up to 24 hrs in advance.)
When ready to cook, heat a lightly-oiled
grill pan over medium heat. Remove lamb and vegetables from
marinade, let excess drip off, and thread on skewers. Place skewers in pan and cook, turning to cook all sides, until
lamb is medium-rare and vegetables are cooked through, about 6 minutes total. (You may have to do this in batches.)
Serve immediately over rice or with
flatbread and pass reserved
sauce on side.