Cream the sugar, butter, and eggs with a mixer until fluffy.
Add the vanilla, lemon juice, lemon zest, salt, and baking powder.
Add the 1 1/2 cups of flour and 1/2 cup of milk, alternating addition until just combined.
In a small bowl, toss the frozen blueberries with the remaining 1 T of flour.
Fold in the blueberries into the batter.
Bake in a parchment paper lined loaf pan at 350 degrees for 60 – 70 minutes.