Maryland Crab Shells

Ingredients

• 40 jumbo pasta shells
• water (for cooking pasta)
• 2 tablespoons green peppers, chopped
• 1 tablespoon red onion, chopped
• 4 tablespoons butter
• 1 12 lbs lump crabmeat, picked through
• 12 teaspoon black pepper
• 1 teaspoon Old Bay Seasoning
• 1 egg, slightly beaten
• 2 12 cups milk
• 1 cup mayonnaise
• 3 tablespoons all-purpose flour
• 12 cup parmesan cheese, grated