Preheat oven to 350 degrees f. (180 C).
Prepare a 9 inch cake pan with parchment paper. Use baking spray, or oil.
Cut oranges into quarters, Place in pot to boil, adding just enough cold water to cover by 2 inches.
Boil for 30 minutes. Drain. Cool. Drain. Place in Vitamix and mix until oranges look like a mush. You don't want big pieces of peel.
Mix almond flour, coconut flour, xanthan gum, salt, baking powder together.
Whisk until well incorporated. Set Aside.
Mix olive oil with Swerve in the mixing bowl you will be making the cake.
Add eggs one at a time on medium high speed.
Add vanilla extract.
Add 1 cup of orange mixture. Mix. (make sure to reserve 2 tablespoons for butter glaze). Mix thoroughly.
Add flour mixture and mix just until incorporated on medium low.
Pour into prepared pan. Bake for 40 to 50 minutes. putting foil over cake loosely once it golden. (around 20 to 30 minutes). Inside middle should get to 205 degrees F. when tested with a meat. thermometer.