Preheat oven to 350℉. Grease a 12-cup muffin pan or 24-cup mini muffin pan. Alternatively, you can use muffin liners.
If using coconut oil, heat the oil in the microwave to over 76℉ to make it liquid and easier to mix.
In a large bowl, combine all wet ingredients, oil, yogurt, eggs, syrup, milk and vanilla.
Add in dry ingredients, flour, oats, salt, baking powder and baking soda. Mix gently until no lumps remain.
Fold in blueberries.
Divide batter evenly in prepared muffin tin. Bake for 22-26 minutes depending on your oven.
Store in an airtight container in the fridge for up to a week or in the freezer for up to 3 months.