Slow Cooker Easy Beef and Broccoli

1 jar (4 1/2 oz) Green Giant® sliced mushrooms, drained

1 medium onion, cut into wedges

1/2 cup condensed beef broth

3 tablespoons purchased teriyaki baste and glaze

1 tablespoon sesame seed

1 teaspoon dark sesame oil, if desired

2/3 cup uncooked regular long-grain white rice

1 1/3 cups water

2 tablespoons water

1 tablespoon cornstarch

2 cups Green Giant Select® frozen broccoli florets, thawed