Preheat the oven to 425°F. Line a muffin pan with 9 liners, spray the liners and top of the pan with nonstick spray to ensure they come out of the pan.
Place sugar and lemon zest in a large bowl, mix together with your hands or a whisk until completely combined, you want to release the oils from the zest. Add the melted butter, eggs, milk, and vanilla, mix until combined.
Whisk together the flour, baking powder, and salt. Add it to the wet ingredients.
Whisk until combined and a batter forms. Do not over mix. Fold in the blueberries until evenly distributed.
Divide the batter evenly over the 9 muffin liners. It will look like a lot of batter for one liner, it’s not. Top with a little more sugar (I like turbinado raw sugar) to just coat the tops.
Position it on the center rack of the oven to ensure even baking, avoiding placement too close to the top or bottom and immediately turn the oven temperature down to 400°F. Bake for about 18-22 minutes or until a toothpick comes out clean, check earlier if your oven runs hot.
Let cool before removing them from the pan.