Preheat the oven to 350°F (conventional) and line a 9" springform pan (or a 9x3" round pan) with parchment paper.
In a large bowl, combine all the wet ingredients along with the orange zest. Whisk until well mixed.
Add the sugar and whisk for an additional minute.
Sift in all the remaining dry ingredients, then use a rubber spatula to gently fold until everything is combined, avoiding overmixing.
Pour the batter into the prepared pan, and optionally sprinkle more sugar on top.
Bake for approximately 50-55 minutes until a toothpick inserted in the middle comes out with moist crumbs attached.
Allow the cake to cool for 20 minutes, then carefully remove it from the pan.
Dust with powdered sugar and serve! Enjoy your delicious Orange Olive Oil Cake!