1. Preheat oven to 400 degrees. Spray a mini muffin tin with non stick spray.
2. In a bowl whisk together flour, sugars, baking powder and salt. Set aside.
3. In a separate bowl whisk together the milk, butter, eggs, vanilla, lemon juice and vegetable oil.
4. Add wet mixture into dry mixture and stir until combined. Fold in the blueberries, careful not to over mix.
5. Spoon batter into muffin cups, just to the top. Bake for 8-10 minutes or until a toothpick comes to clean. (If making regular size muffins, increase baking time to about 13-15 minutes)
6. Cool in the pan for 5 minutes and then transfer to a wire rack. These taste amazing when warm still. Enjoy!