Super Decadent Chocolate Cake with Chocolate Fudge Frosting

I just made this cake yesterday, and it was great- hands down, best chocolate cake I�ve had. I will definitely be making this again. Thank you for the recipe!

Ingredients:

For the Super Decadent Chocolate Cake:

4 cups all-purpose flour
3 cups sugar
1 1/2 cups unsweetened cocoa powder
2 teaspoons baking powder
1� teaspoons baking soda
1 teaspoon salt
1 1/2 cups milk
1/2 cup sour cream
� cup coconut oil
2 large eggs + 2 large egg yolks
1 stick + 6 tablespoons unsalted butter, melted
1 tablespoon vanilla extract
1 1/2 cups strong hot coffee

For the Chocolate Fudge Frosting:

1/2 cup butter, cubed
4.25 ounces unsweetened chocolate, chopped (I used one of those BIG sized hershey dark bars - cheap and yum!)
4 cups confectioners' sugar
1/2 cup half and half
2 teaspoons vanilla extract