01 - Preheat the oven to 350°F and line a 12-cup muffin tin with paper liners.
02 - In a large bowl, cream together the butter and sugar until light and fluffy.
03 - Beat in the eggs, one at a time, then mix in the vanilla extract.
04 - In a separate bowl, whisk together the flour, baking powder, and salt.
05 - Add the dry ingredients to the wet mixture in three additions, alternating with the milk, and mix until just combined.
06 - Divide the batter evenly among the cupcake liners, filling each about 2/3 full.
07 - Bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
08 - Remove from the oven and let cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.
09 - Beat the butter until creamy. Gradually add powdered sugar, then milk, vanilla, and salt. Beat until light and fluffy.
10 - Once cupcakes are completely cool, frost with buttercream using a piping bag or spatula.
11 - Decorate generously with edible wildflowers just before serving.