For the Cake:

2½ cups all-purpose flour

2½ teaspoons baking powder

½ teaspoon salt

1 cup unsalted butter, softened

2 cups granulated sugar

4 large eggs

1 teaspoon vanilla extract

1 tablespoon orange zest

1 cup fresh orange juice

1 cup whole milk

For the Orange Frosting:

1 cup unsalted butter, softened

4 cups powdered sugar

2 teaspoons vanilla extract

3–4 tablespoons orange juice

1 teaspoon orange zest

Optional: 1–2 tablespoons heavy cream (for extra creamy texture)

Optional Garnish:

Candied orange slices

Orange zest

White chocolate shavings