Preheat the oven to 350ºF. Grease a 9” round cake pan and line it with a round piece of parchment paper. Set aside.
Whisk together the almond flour, arrowroot flour, granulated sugar, cocoa powder, baking soda, and salt in a medium mixing bowl. Set aside.
In a second medium bowl, combine the eggs, oil and vanilla extract and mix until smooth.
Add the wet ingredients to the dry ingredients and mix the batter together until thoroughly combined, then pour the batter into the prepared cake pan.
Bake for 28-33 minutes or until the cake is cooked through and a toothpick inserted into the center comes out clean.
Let the cake cool in the pan for 10-15 minutes before inverting onto a cooling rack to finish cooling. Cool completely before frosting.
For the frosting:
Add the butter to a large mixing bowl and beat it with an electric mixer until smooth. Add the cocoa powder, vanilla extract and salt and continue to beat mixture until combined.
Add half of the powdered sugar and one tablespoon of the milk at a time and mix until smooth. Add the remaining powdered sugar and beat until fluffy. Add additional milk if need be to get fluffy frosting that is easy to spread.
Top the cake with the frosting and smooth with an offset spatula. Slice and serve. Makes 8 slices.
Notes
I used Bob's Red Mill blanched almond flour. This recipe will work with any brand of blanched almond flour. Be sure to use blanched almond flour vs. almond meal.You can use tapioca flour instead of arrowroot flour and coconut sugar instead of granulated sugar.You can make this recipe into smaller 6” cakes with two layers. Just divide the batter into two 6” cake pans and check for doneness at 18 minutes.The cake is dairy-free, but if you use dairy-free butter and "milk," you can easily make the frosting dairy free too.Store leftover chocolate cake in a sealed container in your fridge for up to four days. The cake should taste moist since almond flour adds a lot of moisture, but if it tastes stale, zap it in the microwave for a few seconds. Heat will give the cake a better texture.