Broccoli And Swiss Bake

8 cups Broccoli flowerets

1/4 cup Butter or margarine

2 tablespoons Flour

1 small Onion -- chopped

1 1/4 cups Milk

4 cups Swiss cheese -- shredded

2 Eggs -- beaten

In a saucepan, cook broccoli until crisp-tender; drain and set aside. In another saucepan, melt butter; add flour. Cook and stir until thickened and bubbly. Stir in onion. Gradually add milk; bring to a boil and cook for 1 minute. Remove from the heat; stir in cheese, eggs and broccoli. Pour into a greased 2 qt. baking dish. Bake, uncovered, at 325 for 30 minutes.