For the Bread

1. Preheat the oven to 350°F. Prepare a loaf pan. Spray with cooking spray and line the bottom and sides with parchment paper.
2. Combine all the wet ingredients and beat them together until well combined. Then add the sugar and beat until it’s incorporated.
3. Combine all the remaining dry ingredients in a large mixing bowl, and whisk to combine. Add the wet ingredients to the dry ingredients and stir until the flour starts to incorporate.
4. Toss the blueberries with 1 tablespoon flour and then gently stir into the batter. Pour the batter in the prepared pan.
5. Bake at 350°F for 50-60 minutes or until a toothpick inserted in the center of the loaf comes out clean. Cool completely before adding the glaze.

For the Glaze

1. Melt the butter in the microwave and then combine with the powdered sugar and 1 tablespoon of the milk, lemon juice, and vanilla extract. Stir to combine. Add additional milk 1 teaspoon at a time until the desired consistency is reached. Spread over cooled bread and then add lemon zest. If you want the glaze to crust on top, let it set for about an hour.