In a saucepan cook celery in 1 tablespoon of the margarine till celery is tender but not brown.
Add mushrooms, Seasoned Rice Mix, and 1 cup water.
Bring to boiling.
Remove from heat; cover.
Let stand 10 minutes.
In a skillet heat chicken livers in remaining margarine till livers are cooked, about 5 minutes.
Serve chicken livers atop rice.