Variations:
Use a combination of other fresh or dried fruits, such as pears, apple or apricots. Small fruits are fine as is, but you may want to chop larger fruits.
Try different fruit juices.
Stir in about 1 teaspoon of ground cinnamon or vanilla extract before pouring the cooked mix into the cooling pan.
Use whole corn grits in place of some or all of the millet.
1 cup millet, rinsed
3 cups apple juice
1 cup raisins
pinch of sea salt
Recipe and photo courtesy of Leslie Cerier [2], from her book Gluten-Free Recipes for the Conscious Cook [3].
Millet is a naturally sweet grain, and after cooking it sets up and is sliceable. My daughter Emily loved this healthful and easy cake as a child and still does 20 years later.
Links
[1] https://wholegrainscouncil.org/grain/millet
[2] http://www.lesliecerier.com/
[3] http://www.amazon.com/exec/obidos/ASIN/1572247371/oldwayspreservat/103-1446448-4127826