Preheat the oven to 400 degrees. Line a standard muffin pan with paper liners and spray the liners with cooking spray. In a large bowl, whisk the sugar, eggs, and oil vigorously until well combined.
Add the milk and whisk until incorporated.
Add the flour to the wet ingredients, and sprinkle the baking powder, baking soda, cinnamon and salt over the flour. Combine the wet and dry ingredients by stirring gently just until combined.
Add the blackberries and fold in gently.
Divide the batter evenly among the muffin cups. Bake the muffins for about 15 minutes or until golden brown and a toothpick inserted into the center comes out clean.
Cool on a wire rack for 10 minutes, then remove the muffins from the pan and continue to cool on the wire rack. Enjoy!
Notes
Whole wheat white flour may be substituted with the same amount of all purpose flour or a combination of one cup of all purpose flour and 3/4 cup + 2 tablespoons whole wheat flour.
Coconut sugar may be substituted with the same amount of granulated or brown sugar.
Almond milk may be substituted with whatever milk you have on hand.
If using frozen blackberries, thaw them slightly and blot gently with paper towels.
Store muffins in an airtight container at room temperature for 3-4 days or in the refrigerator for up to one week. Muffins may also be frozen for up to 3 months.