Morton's Steakhouse Shrimp Alexander is a luxurious seafood appetizer that combines jumbo shrimp, lump crabmeat, and a rich beurre blanc sauce. The shrimp and crabmeat are sautéed in butter and served on a bed of creamy mashed potatoes. The beurre blanc sauce, made with white wine, shallots, and butter, adds a decadent touch to the dish. This recipe is perfect for special occasions or when you want to impress your guests with an elegant and delicious appetizer.