Step 1

Stir in the flour, baking powder and salt

Step 2

In a separate bowl, whisk together the butter and sugar. Add the eggs one at a time, then stir in the orange juice and orange zest.

Step 3

Add the flour mixture to the resulting mixture and stir well

Step 4

Grease the mold with oil, bake for about 1 hour

Step 5

Remove from the oven, cool without removing from the mold for at least 10 minutes

Step 6

While the cupcake is cooling, mix the orange juice and powdered sugar to make the frosting.

Step 7

Pour the frosting over the cupcake

Step 8

Slice and serve.