Preheat your oven to 350°F (175°C) and line a cupcake pan with liners.
In a mixing bowl, cream together the butter and sugar until light and fluffy.
Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.
In another bowl, whisk together the flour, baking powder, and salt. Gradually add to the butter mixture, alternating with the milk, beginning and ending with the flour mixture.
Divide the batter evenly among the cupcake liners, filling each about ⅔ full. Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean. Let cool completely.
For the frosting, beat the butter until creamy. Gradually add the powdered sugar, beating until combined. Stir in the vanilla and enough milk to reach the desired consistency.
Frost the cooled cupcakes. Sprinkle shredded coconut on top for the bunny fur. Use mini marshmallows for the bunny ears, candy eyes, and pink jelly beans for the nose.