Preheat the oven to 355F / 180C / 160fan.
Beat the egg yolks and the low-carb sweetener using an electric whisk until pale in color
and light.
Place all the dry ingredients together in a mixing bowl (almond flour, coconut flour and
baking powder). Stir to combine.
Add the wet ingredients to the dry (coconut oil, butter or ghee, vanilla, egg yolk mix). Stir to
combine. Add the almond milk and stir.
Whisk egg whites using an electric whisk until fluffy and peaks form.
Fold the egg whites through the batter.
Spoon the mix into a silicone mold, leaving a little space at the top as they will rise in the
oven. I like to grease the mold with a spray of oil just in case. A silicone mold will stop the upside down cakes from sticking. Bake for 20 - 22 minutes or until you can insert and remove a tooth pick without crumbs
sticking. Remove from the oven and allow to cool for 10 minutes before popping out of the
mold and allowing to fully cool on a wire rack.