You may have already seen or made my Gluten Free Oat or Sorghum Bread with Flaxseed recipe or video. In some of the heavier breads such as oat, teff, etc., I have been adding a bit of baking powder to not only soften the bread, but provide more rise. I really enjoy the entire experimental process. The video below shows the difference in texture, along with a slight less amount of shrinkage. The newer texture was very pleasing to my palate. I hope you find this video helpful. Find the written recipe at Dairy-Free Gluten Free Sandwich Bread Recipe: Oat Bread (or Sorghum). Or find an even better gluten free bread recipe, though not dairy-free at Gluten Free Oat Bread (or Sorghum)
Note: Though you may use other flours in this recipe, I show it made as a gluten free oat bread.