Root Beer Float Cake

INGREDIENTS

2 cups

root beer (do not use diet root beer)

1 cup

dark unsweetened cocoa powder

1/2 cup

unsalted butter, cut into 1-inch pieces ((4 ounces ))

1 1/4 cups

granulated sugar

1/2 cup

dark brown sugar

2 cups

all-purpose flour

1 1/4 tsp

baking soda

1 tsp

salt

eggs

2 oz

dark chocolate (melted and cooled slightly)

1/2 cup

unsalted butter, softened ((4 ounces ))

1 tsp

salt

1/4 cup

root beer

2/3 cup

dark unsweetened cocoa powder

2 1/2 cups

powdered sugar