"the greatest and easiest" chocolate cake

I love Trader Joes.  I just had to get that out of the way.
My friend Janet was testing out a chocolate cake recipe for an upcoming event so let my family sample some chocolate cupcakes.  The recipe came from the backside of a can of Trader Joe's cocoa powder.  A lot of times that's one of the best place to find a great recipe.  My kids said this cupcake was way better than your average cupcake.

"the greatest and easiest" chocolate cake (Trader Joe's cocoa powder)
3 1/3 cups flour
1 1/3 cups cocoa powder
3 cups sugar
1 tablespoon baking soda
1 teaspoon salt
12 ounces butter
3 cups buttermilk
1 teaspoon vanilla
5 eggs

Preheat oven to 350 degrees.  Grease and flour two 9-inch round baking pans or you can use 2 round 8-inch pans that are 4 inches deep.
Place all ingredients in electric mixing bowl and beat on high for 3 minutes, scraping down sides of bowl once during mixing.  Pour into prepared pans.  Bake cakes for about 55 minutes or until toothpick comes out clean.

What I saw online- one gal used this recipe and was able to make a really thick chocolate cake (two 4-inch layers).  Janet was able to make one 8-inch cake for an ice cream cake base and 22 cupcakes.