01 - Preheat the oven to 350°F. Grease a 12-cup mini bundt pan or muffin tin thoroughly.
02 - Whisk together flour, baking powder, baking soda, and salt in a medium bowl until well blended.
03 - 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. Mix in vanilla extract and lemon zest until incorporated.
05 - Alternate adding flour mixture and milk to wet ingredients, beginning and ending with flour. Fold in lemon juice until just combined; avoid overmixing.
06 - Divide batter evenly among prepared cups, filling each about 3/4 full.
07 - Bake for 16–18 minutes until a toothpick inserted into the center comes out clean. Allow cakes to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.
08 - Whisk powdered sugar with sufficient lemon juice to achieve a thick but pourable consistency. Drizzle glaze over completely cooled cakes.