Brush an 8 1/2-by 4 1/2-inch loaf pan with oil. Combine millet and 1/2 cup warm water in a small pan. Bring to a
boil, remove from heat, and let stand 30 minutes. Reserve.
Preheat oven to 400 degrees. Meanwhile, whisk together flours, yeast, and xanthan gum. Whisk together eggs, molasses, salt, and oil. Add egg mixture to dry ingredients. Then beat with a paddle attachment until combined. Beat in 1 cup warm water and the millet.
Continue beating on medium-high speed for 5 minutes. The dough will be like thick elastic cake batter, not like
traditional bread dough.
Transfer to prepared pan and spread evenly. Lightly drape with oiled plastic wrap and place in a warm spot until risen about 1 1/2 inches above edge of pan, about 1 hour and 30 minutes (once dough begins to dome, remove plastic for remainder of rising time).
Reduce oven to 350 degrees. Place bread in oven, and bake until dark brown and hollow sounding when tapped, about 1 hour. Cool in pan on rack for 10 minutes. Remove and cool completely. If necessary, run knife around the edge of the pan to loosen before removing.