Preheat oven to 375°F (190°C) and line a muffin pan with liners.
In a large bowl, rub the lemon zest into the sugar until fragrant.
Add flour, baking powder, and salt and whisk together.
In a separate bowl whisk melted butter, oil, eggs, vanilla, milk, and lemon juice.
Pour wet ingredients into dry ingredients and mix until just combined.
Gently fold in blueberries.
Let the batter rest for 15 minutes.
Spoon batter into muffin cups about ¾ full.
Leave spaces between some muffins for bakery-style muffin tops.
Bake 18–22 minutes until golden and cooked through.