Alfajores! I have a whole plateful, and appetite for just one. A lot of work unless you really love them or know someone who does.

Velvet Devil's Food Cake
Cook's Illustrated

Dissolve 1/2 cup non-alkalized cocoa in one cup hot coffee
Cool

Cream 12 TBSP butter
1 1/4 cup sugar
add 2 large eggs (room temp) one at a time, beat one minute after each

Stir:
1 1/4 cups flour
1/2 tsp salt
1/2 tsp baking soda

Add flour & cocoa mix to creamed mix alternatively 1/3 each time

Bake in 2 8" cake pans at 350 for 23-30 min


Frosting:
2 sticks butter
2 cups confectioners sugar
2 tsp vanilla

Beat well, about ten minutes