Stir butter into rice. Beat yolks and add half-and-half, milk, sugar, lemon peel, vanilla, and salt. Fold in egg whites which have been beaten until stiff but not dry. Turn into a buttered shallow 2-quart baking dish. Set in pan of hot water. Bake at 350F for 1 hour or until knife inserted near center comes out clean.
Serve warm with Lemon Sauce*.
Combine sugar, cornstarch, and salt. Stir in water gradually. Cook, stirring constantly, about 5 minutes. Blend in remaining ingredients.
Makes 8 servings.
Cajun Country -- New Iberia, Louisiana