Cook rice as directed in chart .
Place butter, lemon juice and onions in a 2 cup glass measuring cup.
Microwave 2 to 3 minutes [ROASTS, 3 to 4 minutes] or until tender.
Pour over rice.
Stir in eggs, olives and dry mustard.
Cover and microwave 4 to 6 minutes or until hot.
Stir in sour cream and cheese.
Let stand 3 minutes before serving.