Preheat the oven to 350°F (175°C) and grease two 9-inch round cake pans.

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

Add eggs one at a time, beating well after each addition, then mix in the vanilla.

In another bowl, whisk together flour and baking powder; gradually add to the creamed mixture, alternating with milk, until well blended.

If desired, divide the batter and mix in food coloring for a fun design.

Pour batter into prepared pans and bake for 25-30 minutes or until a toothpick inserted comes out clean.

Let the cakes cool before decorating with fondant or frosting as per your theme.

Add personalized cake toppers and decorations to finish the look.