Beef Benihana

This recipe is in the ward cookbook, but it is good enough to repeat here.

1 TBSP sesame seeds 
1 onion, cut into thin wedges
½ lb. mushrooms, sliced
2 medium zucchini, cut in thin strips
1 lb. boneless beef sirloin, cut in 1/4" strips 
2 TBSP oil 
6 TBSP Teriyaki sauce
2 tsp sugar
1 tsp salt
½ tsp black pepper

Toast sesame seeds in skillet until brown. Remove. Heat 1 TBSP oil for 30 seconds. Add beef; stir-fry until done. Remove with juices. Add remaining oil. Add onions; stir-fry until they start to soften. Add zucchini and mushrooms. Cook until tender-crisp. Stir remaining ingredients together to make sauce. Add meat, accumulated juices, sesame seeds and sauce. Heat. Serve over hot rice.