Double Chocolate Fudge Coca Cola Cake

1 Preheat oven to 350°F.
2 Spray a 9x13 dish with nonstick spray or grease with butter.
3 Blend the flour and sugar together in a large bowl of an electric mixer. Set aside.
4 In a medium saucepan over medium heat whisk together Coca Cola, butter, oil, and cocoa powder until smooth.
5 Bring to a boil and remove from heat.
6 Pour over the flour mixture and beat on low for about 1 minute, or until well blended.
7 Add the egg and yolks, buttermilk, baking soda, and vanilla.
8 Beat on low for about 1 minute or until blended.
9 Stir in the chocolate chips.
10 Spoon into the prepared pan and bake for 30 to 40 minutes, or until a toothpick inserted in the center comes out clean. (This will be about 200° with an instant read thermometer).
16 Remove from oven and spoon the glaze over the cake while it is still warm.
17 Let cool completely before cutting.
Glaze
12 About 10 minutes before the cake is ready to come out of the oven melt the butter in a heavy saucepan and add the Coca Cola, cocoa powder, and vanilla.
13 Whisk smooth.
14 Remove from heat and add the powdered sugar.
15 Whisk until smooth.