Preheat the oven to 350º F.
Spray coconut oil in your cake pans to prevent sticking.
In a large bowl, add your dry ingredients and whisk to blend.
In a mixing bowl, add all wet ingredients and mix. Pour your wet ingredients into the dry ingredients and mix until the batter is just barely mixed.
Pour batter into the baking pans, so each pan is ¾ full.
Put the batter filled pans on a baking sheet and bake.
Bake for 20 minutes. (*See note)
Remove from heat and allow to cool.
Add all frosting ingredients to a mixer and mix on high speed.
Remove first cake from the pan onto a plate.
Spread lemon curd on the cake.
Add a layer of frosting.
Continue to stack until you have used all layers of cake.
Spread frosting on the top and sides of the cake.
Optional top with fresh lemon zest.