Preheat oven to 375°. Lightly grease muffin cups or use liners.

Cream butter and sugar together with a mixer.

Add the eggs and vanilla; mix until fluffy.

In a separate bowl, add flour, baking powder, and salt; stir to combine.

Alternate adding dry ingredients and the milk to the butter mixture.

Toss blueberries in a little flour and fold them into the batter.

Scoop batter into the prepared muffin pan.

Spoon the extra sugar on top of muffins.

Bake at 375° for 25-30 min