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

In a mixing bowl, cream together softened butter, granulated sugar, and brown sugar until light and fluffy, about 3-4 minutes.

Add eggs one at a time, and then mix in the orange juice, orange zest, and vanilla extract until well combined.

In a separate bowl, whisk together flour, baking powder, and salt. Gradually add this dry mixture to the wet ingredients, stirring until just combined.

Pour the batter into the prepared cake pan and smooth the top. Bake for 30-35 minutes or until a toothpick inserted comes out clean.

Allow the cake to cool in the pan for about 10 minutes before transferring to a wire rack to cool completely.

Prepare the glaze by mixing powdered sugar with orange juice until smooth. Adjust the consistency as necessary.

Drizzle the glaze over the cooled cake and garnish with orange zest before serving.