Cracker Barrel's Coke Cake

I've never tried to make this cake, but I really want to...and I'm a big fan of the cake when ever they have it at Cracker Barrel!

Ingredients:
1 Stick Butter
1 cup Coca Cola
3/4 cup Miniature Marshmallows
1 Square Semi Sweet Baking Chocolate
1/2 cup Shortening
1/2 cup Vegetable Oil
3/4 cup Cocoa
2 Eggs
1/2 teaspoon Salt
2 teaspoons Vanilla
3/4 cup Buttermilk
2 cups Sugar
2 1/3 cups Flour
1 teaspoon Baking Soda
1 1/2 teaspoon Baking Powder

Frosting:
1 Stick Butter
1/2 cup Cocoa
1/4 cup Coca Cola (plus 2-3 Tbsp. if needed)
3 cups Powder Sugar
1 teaspoon Vanilla
1/4 cup Hershey's Chocolate Syrup

Directions:

Place in a sauce pan butter, coke, semi sweet baking square and bring to a boil remove from heat and add marshmallows and stir until all is blended and the marshmallows are disappear. Set aside to cool enough to tepid or room temperature.

In mixing bowl blend the shortening, oil, vanilla and sugar until fluffy. Add eggs and buttermilk and beat until smooth. Mix flour with baking soda, cocoa, baking powder and salt, add half of flour mixture to shortening, egg mixture, and beat. Scrape bowl time to time to clean the sides off so ingredients are blended in batter. Add cooled coca cola mixture and beat. Add remainder of flour and beat until completely smooth about 3 - 4 minutes. Batter will be thick.

Place batter into a 13" x 9" x " 2 oiled and floured baking pan. Set pan on top shelf in a preheated 350 degrees oven for 35 - 40 minutes. Check for completed baking time with a toothpick. If the toothpick comes out clean by sticking in the middle of the cake it is time to come out of the oven and cool.

For Frosting: Cream butter, add cocoa, vanilla, Hershey's Syrup, and coca cola, beat until smooth. Add powder sugar a little at a time and beat constantly. Scrape the sides of bowl time to time to get all ingredients into the frosting. If the frosting seams a little dry add a little more coca cola and beat well.

Frost warm cake. Serve with natural vanilla bean ice cream and enjoy.