Giada De Laurentiis is hosting an open house and her guests are bringing their favorite family holiday appetizers to share with the group. She's also making a variety of Italian-themed appetizers like Goat Cheese-Stuffed Baby Peppers, Crispy Chicken Meatballs, Shrimp Fra Diavolo Bites, Chocolate Christmas Tree Brownies and a Whiskey Spritz cocktail.