Extra blueberriesthin lemon slices, powdered sugar
Instructions
Preheat oven to 350°F (175°C). Grease a 9-inch round cake pan and line the bottom with parchment.
Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
Rub lemon zest into the granulated sugar with your fingers until aromatic.
Beat butter into zesty sugar until light. Add eggs one at a time, then stir in lemon juice.
Alternate adding dry mix and sour cream to the butter mixture, starting and ending with dry ingredients. Stir in milk until just combined.
Gently fold the floured blueberries into the batter to distribute evenly.
Pour batter into prepared pan. Bake 35–45 minutes (round pan) or 50–60 minutes (loaf) until a toothpick comes out with a few moist crumbs.
Cool in pan 10 minutes, then transfer to a wire rack to cool completely. Whisk powdered sugar with lemon juice to make a pourable glaze and drizzle over the cooled cake.
Notes
For frozen blueberries, fold them in while still frozen to prevent color bleed.
Rub zest into sugar to maximize lemon aroma.
Let the cake cool completely before glazing for the best finish.