Preheat oven to 325 degrees.
Mix all dry ingredients (except for 1 T. of flour) in large mixing bowl. Set aside.
Mix all wet ingredients in medium mixing bowl. Set aside.
Make a well in the center of the mixed dry ingredients. Gently pour the mixed wet ingredients into the dry ingredients.
Slowly stir/fold until just combined (too much mixing can toughen the texture).
Dust blueberries in 1 T. of flour.
Gently fold dusted berries into mixture.
Scoop dough into lined cups of a muffin pan (or gently butter sides of the cups – or skip altogether if you have a non-stick pan).
Bake 18-20 minutes or until golden brown. Cool and enjoy!