Louisiana Shrimp Casserole

Ingredients

• 1 medium onion, chopped
• 1 medium green pepper, chopped
• 1 celery rib, chopped
• 6 tablespoons butter
• 1 garlic clove, minced
• 1 can (10-3/4 ounces) condensed cream of mushroom soup, undiluted
• 1 pound uncooked shrimp, peeled and deveined
• 1-1/2 cups cooked rice
• 2 cans (6 ounces each) crabmeat, drained, flaked and cartilage removed
• 4 slices day-old bread, cubed
• 3/4 cup half-and-half cream
• 1/4 cup chopped green onion tops
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• Dash cayenne pepper
• TOPPING:
• 2 tablespoons butter, melted
• 1/3 cup dry bread crumbs
• 2 tablespoons snipped fresh parsley