Preheat oven to 350 degrees F.
Prepare three 8-inch round cake pans by spraying them with baking oil and adding parchment paper to the bottom, and another coating of baking spray.
Combine flour, corn meal, salt and baking powder in a small bowl, whisk and set aside.
Whisk eggs and sugar in the bowl of an electric mixer until lighten in color, add the mandarin zest and vanilla bean seeds.
Whisk in the mandarin olive oil.
Add half of the dry ingredients, followed by the mandarin juice and the rest of the dry ingredients and a few drops of orange gel food coloring. Using a spatula scrape the sides of the bowl and whisk on low.
Pour the batter into the prepared pans and bake for 30-35 minutes or until a toothpick inserted in the middle of the cake comes out clean.
Cool in the pan for 10 minutes, invert the pans onto a cooling rack and cool to room temperature.