01 - Preheat oven to 350°F. Line a 12-cup muffin tin with cupcake liners.
02 - Whisk together flour, baking powder, and salt in a medium bowl.
03 - Beat butter and sugar in a large bowl until light and fluffy. Add eggs one at a time, beating well after each addition. Stir in vanilla.
04 - Add flour mixture to butter mixture in three batches, alternating with milk. Mix gently until just combined.
05 - Divide batter evenly among cupcake liners. Bake for 18-20 minutes, or until a toothpick inserted in center comes out clean. Cool completely on wire rack.
06 - Beat butter until creamy. Gradually add powdered sugar, milk, vanilla, and salt. Beat until smooth and fluffy.
07 - Frost cooled cupcakes with generous layer of buttercream. Dip each frosted cupcake into shredded coconut to create fur effect.
08 - Cut each mini marshmallow in half diagonally. Dip sticky side into pink sanding sugar to make bunny ears.
09 - Insert two ears into each cupcake. Add two candy eyes, a pink jelly bean nose, and use extra coconut for cheeks if desired.