Broccoli Puff

Description
Makes 4 servings.

Ingredients

 * 1/2 cup chopped onion
 * 1 tablespoon butter or margarine
 * 1 10-ounce package frozen chopped broccoli, thawed and well-drained
 * 2 cups cooked rice
 * 1 10-3/4-ounce can condensed cream of mushroom soup
 * 1/4 teaspoon ground thyme
 * 1 teaspoon Worcestershire sauce
 * 4 eggs, separated
 * 2 cups (8 ounces) shredded Cheddar cheese

Directions
Cook onion in butter in small skillet until tender. Combine onion with broccoli, rice, soup, thyme and Worcestershire sauce in greased shallow 2-quart baking dish. Bake at 400 degrees 20 minutes.

Meanwhile, beat egg yolks until thick and lemon-colored; add cheese.

Beat egg whites until soft peaks form; fold in egg yolk mixture. Remove baking dish from oven; stir. Spread egg mixture over top. Bake 10 to 15 minutes or until golden brown.