Ingredients :

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Flour 2 cups
Sugar 2 cups
Baking soda 1 t
Butter 8 T, or 1 cup
Cocoa 3 T
Cola 1 cup
Buttermilk, or sour milk (see note) 1/2 cup
Eggs beaten 2 each
Mini marshmallows 1 1/2 cups
Vanilla 1 T
Butter 4 T, or 1/2 cup
Cocoa 3 T
Cola 6 T
Sugar, powdered 1 lb
Pecans (opt.) chopped 1 cup

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Method :

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1. Preheat oven to 350°. Mix flour, sugar and baking soda together in a large bowl.
2. Heat butter, cocoa and cola just to boiling in a sauce pan. Pour over flour mixture and beat well.
3. Mix buttermilk, eggs, vanilla and marshmallows together, and stir into flour mixture.
4. Pour into a greased 13"x9" cake pan and bake for 30-40 minutes.
5. While cake is baking, bring remaining butter, cocoa and cola to a boil in a saucepan. Remove from heat and beat in powdered sugar and pecans until smooth.
6. Spread the icing evenly over the cake as soon as it finishes baking (the cake must be hot).
7. Let cool and serve.

Variations :

* Sour milk can be made by adding 1-2 t lemon juice to 1 cup of milk. Let set about 10 minutes.