01 -
Preheat the oven to 350°F. Grease a 9×13-inch baking dish and line with parchment paper, leaving an overhang on the two long sides for easier removal.
02 -
In a medium mixing bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt. Set aside.
03 -
In a stand mixer fitted with the paddle attachment or using a hand mixer, cream the butter and granulated sugar together until light and fluffy. Add the eggs, vanilla extract, and buttermilk, and mix on low speed until blended.
04 -
Gradually add the dry ingredient mixture to the wet ingredients and mix until no streaks of flour remain. Stir in the lemon juice and zest.
05 -
Gently fold the floured blueberries into the batter using a spatula. Pour the batter into the prepared baking dish, spreading it evenly.
06 -
Bake the cake in the preheated oven for 40-45 minutes, or until a toothpick inserted into the center comes out with moist crumbs. Allow the cake to cool completely in the dish.
07 -
In a small mixing bowl, whisk together the powdered sugar and lemon juice until smooth.
08 -
Drizzle the glaze over the cooled cake. Allow the glaze to harden before serving. Optionally, garnish with fresh fruit before slicing and serving.