The first time this was made in our house (by Marlow!), there was an embarrassingly little amount left! and there’s only 4 of us! Tess is an amazing baker already at only 13 years old and we’re grateful she not only made us this fabulous cake, but she then freely shared her well-loved, often-used recipe (with a side note that it works well for a ‘money cake’). We got a pretty good dome on our 8-inch pans so at some point I’m going to also try 9-inch and see what happens. (**update – 9″ works great! might be the size I use going forward!). The frosting shown is Chocolate Buttermilk Frosting and oh my goodness it’s a dangerous combination! The only teeny change I made was to swap the water in the original for an equal amount of strong coffee – enjoy!
2 c. flour AND 2/3 c. cocoa
1 1/4 t. baking soda AND 1/4 t. baking powder
3 eggs AND 1 t. vanilla
1 2/3 c. sugar
1 c. mayonnaise
1 1/3 c. room temperature strong coffee (or water)
Spray 2, 8-inch (or 9-inch, little less doming, easier to tell if it’s done) round cake pans, line the bottoms with parchment and spray the parchment. Preheat the oven to 350.
In a medium bowl, whisk together the flour, cocoa, baking soda and baking powder and set this aside for a bit. Using your electric mixer, beat together the eggs, vanilla and sugar on high for 3 minutes, then reduce the speed to low and scrape in all of the mayonnaise. With the mixer still on low, alternately add the flour mix in 3 portions with the coffee, beginning and ending with the flour. Scrape down the bowl if needed and mix until no trace of flour can be seen.
Add the batter to your prepared cake pans and then weigh them to make sure that the batter is evenly distributed. Bake for about 35 minutes (for both 8 and 9″ cake pans) until the tops are lightly cracked and a cake tester comes out clean. Allow the cakes to rest in the pans for about 10 minutes until turning them out to cool completely.
Shape and frost the cakes as you wish – Marlow trimmed both layers until that they were perfectly even so that she could practice her decorating skills, but we were all horribly impatient and the cake was devoured before any decent photos were taken. Not to worry though…there will be several more ‘next times’ I’m sure!