In a skillet, melt butter over medium heat. Saute onion, green pepper, celery and garlic until tender. Add shrimp soup, shrimp and crawfish. Cook and stir until shrimp turns pink. Stir in rice, crab meat, bread crumbs, sour cream, onion tops and seasonings. Spoon into a greased two-quart casserole dish.
Combine topping ingredients. Sprinkle topping over casserole.
Bake at 375F for 25-30 minutes.
Yields 8-10 servings.
Casseroles - Quiches
Cajun Country -- New Iberia, Louisiana