Baby Teething Crackers
   Recipe yielding about 15 servings. Made with corn meal and whole wheat flour.
   http://recipes.wenzel.net/recipe.epl?id=1088

Baby Teething Crackers from iChef
   Hard biscuits using whole wheat flour.
   http://www.ichef.com/recipe.cfm?task=display&itemid=81015&recipeid=80677

Italian Teething Cookies
   In Italian, these cookies are called "Ossi Dei Morti" or bones of the dead. They are hard cookies, but they are used for teething babies. Adults like to dip them in cappuccino.
   http://cookie.allrecipes.com//AZ/ItalianTeethingCookies.asp

Teething Biscuits
   Simple recipe using flour, baby cereal and juice.
   http://food4.epicurious.com/HyperNews/get/archive_swap18401-18500/18432/3/1.html

Teething Cookies
   Recipe using sugar, flour and eggs. Needs to rest overnight before baking.
   http://recipes.wenzel.net/recipe.epl?id=46288

Zwieback
   A twice baked teething rusk.
   http://www.recipesource.com/special-diets/babyfood/zwieback1.html