Butter muffin tin. Preheat oven to 350˚F.
Combine in a mixing bowl: apple sauce, sugar, flax seeds, and water, milk, cinnamon, and oats. Let sit together ~10 minutes for the oats and seeds to absorb the water.
In a measuring cup, mix together flours, baking powder, and baking soda. Then add this mixture to the batter and stir all together until just combined.
Fold in blueberries and pecans as desired.
Pour into buttered muffin tins. Optional to top with a crumble such as the one listed above.
Bake at 350˚F for 25-30 minutes.