Checkered Cake

It's big (you might want to halve the ingredients), easy and pretty much mistake-proof :). Source.

Ingredients:

For the cake:
4 eggs
2 cups sugar
3 cups flour
400 g (a little less than 3 cups) sour cream or yogurt
2 teaspoons baking powder
3 1/2 tablespoons cocoa powder

For the cream:
1 kg (7 cups) sour cream
1 cup sugar

For the icing:
100 g (7 tablespoons) butter
2 tablespoons cocoa powder
3 tablespoons milk
3 tablespoons sugar

Directions:

Preheat oven to 350 F/180 C.
Beat eggs, sugar, flour, sour cream and baking powder together.
Split in two, add cocoa powder to one half.
Pour each half into a separate baking dish and bake for about 25 minutes or until a toothpick comes out clean.


In a large bowl stir sour cream and sugar together.
Break cake layers into bitesize pieces.
Dip each piece into sour cream mix, and arrange them on a serving plate in the form of a cake.
*or*
Drop all of them into bowl and stir well.


And flip on a plate:


For the icing:

Melt butter on low heat.
Mix in milk, sugar and cocoa and stir until the sugar is dissolved.
Cool and pour on cake.

Refrigerate cake for at least 4 hours, preferably overnight.