Whisk the milk, sour cream, eggs, butter, and vanilla until well mixed. Tip: Use a blender on medium-low speed to make the most smoothest batter.
Stir in the flour, sugar, baking powder, baking soda, and salt until the dry ingredients are incorporated and the batter is smooth.
Heat a non-stick frying pan on medium heat and coat it with non-stick spray.
Pour 1/3 cup of the pancake batter onto the pan. Watch for the pancake to form bubbles and the griddle side of the pancake golden, just under one minute.
Gently flip the pancake over and cook for 30 seconds or until golden.
Spray non-stick spray between cooking new pancakes.