Ina Garten is entertaining, and she's taking the pressure off with all make-ahead dishes. She starts with two easy appetizers, Mustard and Gruyere Batons and Warm Dates with Blue Cheese and Prosciutto. Her main course is Moroccan Lamb Tagine with Steamed Couscous, and she whips up a Decadent Chocolate Cake for dessert. Ina also shakes up a classic cocktail with the Dukes Cosmopolitan.