Pastelón de Yuca a la Juana

PLACE yucca and potato in large saucepan. Cover with water and 1 tablespoon salt; bring to a boil. Cook over medium-high heat for 15 to 20 minutes or until yucca and potatoes are tender; drain.

PREHEAT oven to 325º F. Grease 13 x 9-inch baking dish.

RETURN yucca and potatoes to saucepan. Add evaporated milk, butter, 1 teaspoon salt and white pepper. Beat with hand-held mixer until smooth. Stir in lightly beaten egg yolk.

BEAT egg white in small bowl until soft peaks form. Fold whites into potato mixture. Spoon mixture into prepared baking dish. Sprinkle with Parmesan cheese.

BAKE for 30 to 35 minutes or until hot.