Plaza Sweets Bakery will deliver a Buche de Noel to your door for Christmas, an Apple Galette for Mardi Gras or a Lemon Charlotte Royale just for the heck of it. The bakery provides 100 types of cakes, tarts, tortes and cookies for home or wholesale delivery from its Mamaroneck baking plant. Orders may be placed via the Web site or by dialing the toll free number.