Preheat the oven to 350ºF. Spray a 9×5 inch loaf pan with nonstick spray then line with parchment paper, allowing some parchment overhang. Set aside.
In a medium bowl, add the blueberries and one tablespoon all-purpose flour, stir gently to coat the blueberries and set aside.
1 cup blueberries, 1 cup + 1 tablespoon all-purpose flour
In a separate bowl, place the granulated sugar and with your fingers, rub in 1 teaspoon of lemon zest to release the oils.
1 cup granulated sugar, 1 tablespoon lemon zest
In the bowl of a mixer, add the butter and lemon sugar, beating on medium speed until light and fluffy, scraping down the sides as needed.
¾ cup unsalted butter
Add eggs one at a time, allowing each to incorporate fully before adding the next. Once all are incorporated, beat on medium speed for 1 minute until light in color.
3 large eggs
Mix in vanilla and lemon juice.
1 tablespoon freshly squeezed lemon juice , 1 teaspoon vanilla extract
With the mixer off, add in 1 cup all-purpose flour, cake flour, baking powder, baking soda, and salt.
1 cup + 1 tablespoon all-purpose flour, ½ cup cake flour, 1 ½ teaspoons baking powder, ½ teaspoon baking soda, ½ teaspoon kosher salt
Turn mixer on low and mix slowly while adding the Greek yogurt, a little at a time, until fully incorporated. Do not over mix.
1 cup plain full-fat Greek yogurt
With a wooden spoon or spatula, gently fold in the blueberry mixture and remaining 2 teaspoons lemon zest with as few turns as possible.
1 tablespoon lemon zest
Spread batter into prepared pan and bake for 30 minutes then cover loosely with foil to prevent the top from over browning and bake for another 30 minutes or until a toothpick inserted into the center comes out clean.
Allow to cool in the pan for 10 minutes, then gently lift out of the pan using the parchment overhang and allow to cool on a wire rack until completely cool.
Make the lemon glaze by whisking together the powdered sugar and lemon juice.
1 ¼ cups powdered sugar, 2–4 tablespoons freshly squeezed lemon juice
Pour over the cooled cake, slice and serve