01 - Preheat oven to 350°F. Generously grease a 12-cup mini bundt pan or standard muffin tin with cooking spray or butter.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt until thoroughly blended. Set aside.
03 - Using an electric mixer on medium-high speed, beat softened butter and granulated sugar in a large bowl until light and fluffy, approximately 2-3 minutes.
04 - Add eggs one at a time, beating well after each addition until fully incorporated. Mix in vanilla extract and fresh lemon zest.
05 - Alternately add flour mixture and milk to the butter mixture, beginning and ending with flour ingredients. Mix in lemon juice until just combined, taking care not to overmix.
06 - Divide batter evenly among prepared cups, filling each about three-quarters full. Bake for 16-18 minutes or until a wooden toothpick inserted into the center comes out clean.
07 - Allow cakes to cool in the pan for 10 minutes before carefully removing to a wire rack. Let cool completely before glazing.
08 - Whisk powdered sugar with fresh lemon juice, adding juice gradually until a thick but pourable consistency is achieved. Drizzle glaze over cooled cakes and allow to set before serving.