01 -
Preheat oven to 375°F. Line a muffin tin with paper liners and lightly grease paper liners with nonstick cooking spray.
02 -
In a large mixing bowl, use a hand mixer to cream together butter and sugar for about two minutes.
03 -
Beat in eggs until combined. Add in baking powder, salt, and vanilla, then mix briefly.
04 -
Add half of the flour and mix until just combined, then add half of the milk. Scrape the bottom and sides of the bowl. Add in the remaining flour and milk, mixing in between additions.
05 -
Add the blueberries to the batter and use a rubber spatula to gently fold them in.
06 -
Divide the batter evenly among the 12 muffin cups. Sprinkle 1 teaspoon of sugar atop each muffin.
07 -
Bake in the preheated oven for 30 minutes, or until a toothpick inserted into the center comes out clean.
08 -
Let muffins cool for 5 minutes in the pan before transferring to a wire rack to cool completely.