Cook onion and parsley in 2 tablespoons butter in a large skillet
over medium-high heat, stirring constantly, until tender. Reduce heat to medium-low. Stir in flour, salt and pepper. Add sour cream, stirring well. Add green beans; cook until thoroughly heated, stirring occasionally.

Spoon mixture into an ungreased 13x9" baking dish; sprinkle with
cheese. Combine breadcrumbs and remaining butter; sprinkle over
cheese. Bake at 325º for 25 minutes or until cheeese melts and
breadcrumbs are browned.

Makes 12 servings