• Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius). Grease and flour a 9x5 loaf pan or line it with parchment paper for easy removal.
• In a blender, combine the whole seedless navel orange (quartered and seeds removed), eggs, olive oil, granulated sugar, sour cream, and vanilla. Process the mixture until smooth. Be careful not to over-blend.
  1 whole seedless navel orange, 4 eggs, 3/4 cup olive oil, 1 1/4 cup granulated sugar, 1/4 cup sour cream, 2 teaspoons vanilla extract
  
• Add the dry ingredients to the blender. Pulse the blender just a few times until the dry ingredients are incorporated into the wet mixture. Do not overmix.
  2 cups all-purpose flour, 3 teaspoons baking powder, 1/2 teaspoon sea salt
  
• Pour the batter into the prepared loaf pan.
  
• Bake the cake in the preheated oven for 50-55 minutes, or until a toothpick inserted into the center comes out clean and the top is golden brown.
  
• Once baked, remove the cake from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a wire rack to cool completely.
• Once the cake has cooled, you can serve it as is or dust it with powdered sugar for decoration.
  

Glaze

• Combine powdered sugar and orange juice until smooth.
  1 cup confectioners' sugar, 1-2 Tablespoons orange juice
• Pour the glaze over the cake.