Crab Meat Chantilly

1 lb king crab meat, frozen or canned
3 tablespoons chopped green onion
4 tablespoons butter
2 tablespoons flour
Salt & Pepper to taste
1 cup half-and-half
1/4 cup mayonnaise
1 lb asparagus spears, cooked
4 tablespoons grated parmesan cheese

Thaw crab, (if frozen), drain and cut into chunks. Saute onion in butter until tender, not brown. Stir in flour, salt & pepper. Add milk. Cook stirring constantly until thickened. Remove from heat. Stir in mayonnaise and fold in crab meat. Arrange asparagus in shallow baking dish. Cover with crab mixture; sprinkle with cheese. Broil about 4 inches from heat, 3-5 minutes or until lightly browned and hot. serves 4