Preheat oven to 350°F. Butter and flour a 9x5 inch loaf pan.

In a medium bowl, combine sugar and lemon zest, mixing with fingertips until sugar becomes moistened and fragrant. In the bowl of a stand mixer, fitted with the paddle attachment, or with an electric mixer in a large bowl, beat sugar, butter, and cream cheese until fluffy, about 3 minutes. Add eggs one at a time. Mix in vanilla.

In separate bowl, whisk together the flour, baking powder, baking soda and salt. Gradually add dry ingredients into the butter mixture and mix until flour is incorporated. Add buttermilk and mix until just combined; do not over mix. Gently fold in blueberries.

Add batter into prepared pan.

Bake in a preheated oven for 50 to 60 minutes. Allow bread to cool in pan for 20-30 minutes before gently removing bread from pan and to a wire rack to cool completely. Once bread is cool, prepare the lemon glaze.

In a medium bowl, prepare the glaze by mixing together the melted butter, confectioners’ sugar, vanilla and lemon juice. Whisk until smooth. Drizzle over cooled lemon blueberry bread. Glaze will slightly harden.