
Preheat the oven to 350 degrees. Line a loaf pan with parchment paper.
Cream the butter and sugar until fluffy. Mix in the lemon juice, lemon zest, and eggs.
Stir in the flour, baking powder, salt, and milk until the batter is mixed. Gently fold in the blueberries.
Pour batter into prepared pan. Bake for about one hour – the top should be golden brown and spring back when you touch it.
Let cool. Slice, slather on the butter with olive oil, and serve!