American cocoa & Pepsi cake

For ➑
250 g flour
125 g sugar
250 g butter
2 tbs cocoa
25 cl Pepsi *
10 cl buttermilk
2 beaten eggs
1 ts baking soda
1 ts vanilla extract
200 g marshmallows
icing:
6 tbs butter
125 g brown sugar
100 g peanut butter
10 cl milk
100 g chopped peanuts

Preheat oven to 180°C . Grease and flour cake form.
Combine flour and sugar in large bowl. Melt butter, add cocoa and Pepsi. Pour over flour and sugar mixture, and stir until well blended. Add buttermilk, beaten eggs, soda, and vanilla. Mix well. Stir in marshmallows.
Pour into prepared pan. Bake for 40 m.
Remove cake from oven and frost while still warm.
Cream butter, sugar, and peanut butter. Add milk and stir well. Add nuts. Spread over warm cake. Place frosted cake under broiler. Broil just a few s, or until topping starts to bubble.
Let cool at least 30 m before serving.

*Coke connaisseurs insist on using an unopened can or bottle of Pepsi-Cola for this recipe, as it is believed to have a richer sparkle than Coke. Never ever use diet coke.