Add rolled oats to a blender or food processor and blend into a coarse oat meal (not too fine)
In a bowl, combine oat meal, chia seeds, baking powder, salt, and any seeds
Stir in water, oil, honey (if using), and vinegar. Mix well
Let batter sit for 15 minutes so chia seeds gel and thicken the mixture
Pour into a lined or greased loaf pan. Bake at 180°C / 350°F for 45–50 minutes until firm and golden
Let cool completely before slicing
