Blueberry Bread with Sour Cream

1 . Stage

Adjust an oven rack to the middle position and heat the oven to 350 degrees F (175 degrees C). Grease a 9x5-inch loaf pan.

2 . Stage

Whisk flour, baking powder, and salt in a medium bowl until combined.

3 . Stage

Whisk egg in a second medium bowl until well combined and light-colored, about 20 seconds. Add sugar and whisk vigorously until thick and homogenous, about 30 seconds; add melted butter in 2 or 3 additions, whisking to combine after each addition. Add sour cream in 2 additions, whisking just to combine.

4 . Stage

Add blueberries to the dry ingredients and gently toss just to combine. Add sour cream mixture and fold with a rubber spatula until the batter comes together and the berries are evenly distributed, 25 to 30 seconds. Small spots of flour may remain, and the batter will be thick. Don't overmix.

5 . Stage

Using a large spoon sprayed with nonstick cooking spray to prevent sticking, spread the batter evenly into the greased loaf pan.

6 . Stage

Bake in the preheated oven until the top is light brown and a toothpick or skewer inserted into the center of the bread comes out clean, 25 to 30 minutes. Rotate the pan from front to back halfway through the baking time. Let cool for 5 minutes.

7 . Stage

While bread is cooling, mix 1/2 cup sugar and lemon zest together in a small bowl. Set aside.

8 . Stage

Bring lemon juice and remaining 1/4 cup sugar to a simmer in a small saucepan over medium heat; stir to dissolve the sugar and simmer until the mixture is thick and syrupy and reduced to about 1/4 cup. Brush the top of the bread with glaze, then sprinkle the lemon sugar onto the glaze.