Prepare a cupcake tin with liners.
In a mixer, cream butter until smooth.
Add sugar gradually, beating until fluffy.
Add eggs, 1 at a time, beating well after each egg.
Mix the milk and extract together.
Add dry ingredients and milk, alternating flour and milk, ending with the milk. Scrape down sides as needed.
Bake at 350°F for 20-25 min until a toothpick comes out clean. Cool completely before filling.