Heat the oven to 350 degrees Fahrenheit.
In a small bowl, add the flax and hot water, mix and let it sit for 10 minutes.
In a big bowl, add all the dry ingredients. Whisk well so it all gets spread evenly.
In a medium bowl, add all the wet ingredients and the flax eggs from the small bowl. Whisk.
Using a spatula, add the wet ingredients to the bowl with the dry ingredients. Then mix it well using just the spatula.
Butter two 9 inch round pans, and dust them with rice flour.
Divide the mixture evenly between the two pans and bake them for around 25 min. After they cool for 10 minutes, flip them carefully onto a cooling rack. Once completely cooled, frost one side of a cake, then add the other cake on top. Frost the top and cover with berries.