Preheat oven to 350 F. Line 2 9-inch cake pans with parchment paper and grease with non-stick cooking spray.
In a medium bowl, whisk together flour, salt, baking soda and baking powder. In another large bowl using either a hand or a stand mixer, beat softened butter with granulated sugar until fluffy.
Add in eggs, milk and vanilla extract, beat until smooth. In three separate additions, add in flour mixture, beating after each addition until all of the flour is incorporated.
Evenly divide the cake batter between the two prepared cake pans. Bake for 30-35 minutes. Let cakes cool completely.
For the buttercream frosting, using either a hand or stand mixer, beat softened butter with powdered sugar. Add in vanilla extract and milk as needed to thin.
Place one cake layer onto a serving platter. For the other cake layer, cut it into two oval ears and one bow tie. Place the bow tie at the end of the cake on the platter. Place the ears at the other end.
Frost the entire cake and decorate.
