A quintessential childhood food. This is a copycat recipe of the traditional Zwieback Toast that we grew up on, gave to our own kids, and may even be giving to our grandkids now. My daughter has an allergy to cow's milk, so I substitute the milk for half water and half coconut milk and it works out perfectly!! Note: It takes two days to make these cookies. The first day, you make a raised loaf (just like you do when making yeast bread). The baked loaf sits to cool and set during the night. The next day, the loaf is cut into slices and put in the oven to dry. A lot more work than buying them off the store shelf, but your toddler will love you for it -- I promise!! Time to make DOES NOT include kneading time and raising time - just the time it takes to mix the ingredients together and baking time. This recipe is from kingarthurflour.com.