Hostess Cupcakes

INGREDIENTS

1 1/4 cups

all-purpose flour

2 tsp

baking soda

2 tsp

baking powder

1/4 tsp

coarse salt

1 1/4 cups

granulated sugar

4 oz

unsweetened chocolate, chopped

1 stick

unsalted butter, cut into pieces

2 tsp

pure vanilla extract

large eggs, lightly beaten

4 tbsp

unsalted butter, softened

1 cup

powdered sugar

2 tsp

pure vanilla extract

3 tbsp

heavy cream

1 cup

marshmallow crème (Fluff, Jet-Puffed Marshmallow Crème, etc.)

6 oz

bittersweet chocolate, chopped

1/2 cup

heavy cream

1 tbsp

unsalted butter

2 tsp

pure vanilla extract

1 stick

unsalted butter

1 tbsp

milk

2 cups

powdered sugar

1/4 tsp

vanilla