Cook beef and onion in a large nonstick skillet over medium-high heat until beef is browned, stirring to crumble. Drain in a colander; return to skillet. Add water and next 5 ingredients; stir well.
Spoon mixture into an 11- x 7-inch baking dish coated with cooking spray. Cover and bake at 350° for 45 minutes or until liquid is absorbed. Stir in raisins and pine nuts. Serve with seasoned rice vinegar.