Preheat the oven to 400 degrees.
Add the blueberries to a small bowl and mix with one tablespoon of flour. Set that aside.
In a medium bowl, add the flour, baking soda and baking powder. Mix to the flour mixture together to combine and set that aside.
In a large bowl, add the sugar and melted butter. Add the eggs, sour cream, milk, 2 teaspoons of lemon juice, and lemon zest. Mix well to combine.
Add the dry ingredients to the wet ingredients and mix with a wooden spoon until just combined. The batter will not be smooth, it’s ok if there are a few lumps left.
Add the blueberries to the batter and mix again until just combined.
Line a muffin pan with the paper liners. Scoop equal amounts of batter into the muffin tins.
Bake for 20-22 minutes or until a toothpick is inserted and it comes out clean.
Allow the muffins to cool slightly on a wire rack and serve.