Preheat oven to 350F. Grease muffin pan with cooking spray.
In a small bowl or measuring cup, mix together milk and lemon juice to create a buttermilk.
In a medium size bowl, add flour, baking soda, baking powder and salt. Whisk to combine.
In a large bowl, add maple syrup, Greek yogurt, eggs, vanilla and buttermilk mixture.
Add the dry ingredients to the wet ingredients. Using a spatula, fold dry ingredients into wet ingredients. Fold until the flour mixture is incorporated and there are no lumps in the batter.
Add blueberries.
Use a spatula to fold in the blueberries.
Using a cookie scoop, divide batter evenly into prepared muffin pan.
Bake for 18-20 minutes or until a toothpick inserted into the center comes out clean. Let muffins cool for 10 minutes before transferring muffins to a wire rack to cool completely. Makes 12 muffins.