01 - Preheat the oven to 350°F. Grease a 12-mold mini cake pan or muffin tin thoroughly.
02 - In a mixing bowl, cream the softened butter and granulated sugar together until light and fluffy.
03 - Add the eggs one at a time, mixing well after each addition. Stir in the lemon zest, lemon juice, and vanilla extract until evenly combined.
04 - In a separate bowl, whisk together the all-purpose flour, baking powder, baking soda, and fine salt.
05 - Alternately add the dry ingredients and milk to the wet mixture, beginning and ending with the flour. Mix until just combined; avoid overmixing to keep the texture tender.
06 - Divide the batter evenly among the prepared molds, filling each one to roughly three-quarters full.
07 - Bake for 16 to 18 minutes, or until a toothpick inserted in the center comes out clean. Cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.
08 - Combine the sifted powdered sugar, whole milk, ground lavender, and lemon juice in a bowl. Whisk until smooth and slightly thick but still pourable.
09 - Drizzle or spoon the glaze over the completely cooled mini cakes. Garnish with extra lavender buds or lemon zest if desired.