Coca Cola Cupcakes and Frosting

I'm always on a hunt for a good cupcake recipe. I found this one at www.cupcakerecipes.com. I made these for Eli's 3rd birthday. They were SO delicious! Moist and everything a good chocolate cupcake should be! They are really really good cold!

Coca Cola Cupcakes and Frosting
Part 1
1 cup coca cola
1/2 cup butter
1/2 cup vegetable oil
1/4 cup powdered cocoa
22 large marshmallows

Part 2
2 cups flour
2 cups sugar
1 tsp baking soda
1 tsp vanilla
1 cup buttermilk
2 large eggs, beaten

Preheat oven to 325. Line cupcake pans with paper liners. These cupcakes work best with the silver metallic liners.

Part 1
In a small saucepan mix cola, butter, oil and cocoa. Bring to a boil, remove from heat, and add marshmallows. Place lid on saucepan and leave until marshmallows begin to melt. Stir well.

Part 2
Mix flour, sugar, and baking soda in a large mixing bowl. Add buttermilk, eggs, and vanilla. Mix well.
Combine Part 1 and 2. Spoon cupcake batter into cupcake pan until they are 1/2 to 2/3 full.
Bake at 325 for approximately 25 minutes.
Cool cupcakes before frosting.

Coca Cola Frosting
1/4 cup powdered cocoa
6 Tbsp coca cola
1/2 cup butter
3 and 3/4 cup powdered sugar (or 1 lb box)
1 cup chopped pecans (optional)
1 tsp vanilla

In a medium saucepan, mix together cocoa, cola, and butter. Heat over medium heat until melted then bring to a boil. Remove from heat and add powdered sugar, pecans and vanilla. Stir until blended well.
Let frosting cool until still enough to frost cupcakes.