Preheat the oven to 350 degrees. Cut out a parchment circle and place into a 9 inch round cake pan.
In a large bowl, whisk all cake ingredients together.
Pour into prepared pan.
Bake for 50 minutes. Let cool and then remove cake from the pan.
Sprinkle with powdered sugar and cut into slices.
Notes
Picture: the pictures of this cake are with a mandarin, not a navel orange because I forgot to buy a second one.Storage: cake can be stored on the counter for 3 days. Wrap tightly in plastic wrap and freeze for up to 3 months.