Root Beer Float Cupcakes

INGREDIENTS

FOR THE CUPCAKES:

whole Egg

3/4

cups Brown Sugar

1/2

cups Plus 1 Tablespoon Heavy Cream

1/2

cups Butter, Melted

teaspoon Vanilla Extract

Tablespoons Sour Cream

1 1/2

cup All-purpose Flour

1/4

cups Dark Cocoa Powder

1 1/4

teaspoon Baking Soda

1/2

teaspoons Salt

teaspoons Root Beer Concentrate

1/3

cups Root Beer

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FOR THE FROSTING:

1 1/2

stick Butter, Softened

cups Powdered Sugar

Tablespoons Milk

Tablespoon Vanilla Extract

1/4

teaspoons Root Beer Concentrate

Optional Topping: Hot Fudge Or Cocoa Syrup