01 - Preheat oven to 350°F. Grease and flour two 8-inch round cake pans thoroughly.
02 - Whisk together flour, baking powder, baking soda, and salt in a medium bowl until well blended.
03 - Beat softened butter and granulated sugar in a large bowl until light and fluffy, approximately 3-4 minutes.
04 - Add eggs one at a time, beating well after each addition. Mix in vanilla extract.
05 - Alternate adding flour mixture and milk to creamed butter mixture, beginning and ending with dry ingredients. Mix until just incorporated.
06 - Divide batter evenly between prepared pans. Bake for 22–25 minutes until toothpick inserted in center emerges clean.
07 - Let cakes rest in pans for 10 minutes before transferring to wire racks. Cool entirely before frosting.
08 - Beat butter until smooth. Gradually incorporate powdered sugar, vanilla, salt, and sufficient milk to achieve spreadable consistency.
09 - Keep one cake round intact for the face. Cut second round into two ear-shaped ovals and center portion into bow tie configuration.
10 - Arrange face, ears, and bow tie on large serving tray in bunny formation.
11 - Spread thin layer of frosting over all cake pieces. Refrigerate for 20 minutes to set.
12 - Frost cake completely with remaining buttercream. Press shredded coconut generously over entire surface.
13 - Tint small portion of coconut with pink food coloring. Gently press colored coconut onto ear sections.
14 - Position fondant or marshmallow ear details. Place candy nose, eyes, and additional decorations as desired.