Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.

In a large bowl, cream together the softened butter and sugar until light and fluffy.

Add eggs one at a time, beating well after each addition.

Stir in the vanilla extract.

In another bowl, combine flour, baking powder, and salt. Gradually add to the creamed mixture alternately with milk, starting and ending with the flour mixture. Mix until just combined.

Divide the batter evenly between the two prepared pans.

Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.

Allow cakes to cool in the pans for 10 minutes, then turn out onto wire racks to cool completely.

Once cooled, frost with buttercream frosting and use food coloring to create butterfly decorations on top.

Optionally, add edible glitter and decorative toppers for a festive finish.