Preheat oven to 350F, grease OR line sides of 9x3 loaf pan with parchment paper
Add sugar and lemon zest to stand mixer bowl with the paddle attachment. Rub together sugar and zest with your fingers to release that extra lemon flavor
Add in flour, baking powder, and salt. Mix it up
While the mixer is running on the lowest speed, drop in about 1tbsp of butter at a time. You might have to kick up the speed a bit as the butter mixes in
Once it is all crumbly and the butter isn’t lumpy turn off the mixer and scrape the sides of the bowl
Mix in vanilla and one egg at a time
Next, mix in the lemon juice, don’t get any seeds in there, and then the milk
Scrape down the sides making sure everything is mixed together all the way through
Rinse the blueberries and toss them in a small amount of flour until they are fully coated. This will keep the berries suspended in the batter and prevent them from all falling to the bottom
Drop the berries into the batter and carefully mix them in as evenly as you can
Pour the batter into the loaf pan evenly. Top it with the extra berries and the crumble we made earlier
Bake for at least 1 hour, depending on your oven you will need more time but take it slowly when adding cook time to it. Make sure it is done in the middle by sticking a toothpick or knife into the center and it comes out clean
Allow to cool for an hour before you drizzle the top