Preparing the Pan

1. Preheat the Oven: Set your oven to 350°F (177°C).
2. Prepare the Cake Pan: Line the bottom of a 10-inch (25 cm) cake pan with parchment paper. Grease the parchment and sides of the pan with unsalted butter, then dust lightly with flour to prevent sticking.

Making the Cake Batter

3. Mix Wet Ingredients: In a large mixing bowl, use an electric mixer to beat the eggs with granulated sugar, orange zest, and kosher salt until well combined.
4. Combine Liquid Ingredients: In a separate medium bowl, whisk together the orange juice and olive oil.
5. Combine Wet and Dry Ingredients: With the mixer on low speed, gradually add the orange juice and olive oil mixture to the egg mixture. Then, gradually beat in 2 cups of flour in three additions, ensuring each addition is well incorporated before adding the next, until the batter is smooth.

Baking the Cake

6. Bake the Cake: Pour the batter into the prepared pan. Place in the preheated oven and bake for 45 to 50 minutes, or until the cake is golden brown and a toothpick inserted into the center comes out clean.
7. Cool and Serve: Allow the cake to cool completely in the pan. Once cool, remove from the pan, discard the parchment paper, and if desired, dust with confectioners’ sugar before serving.