Death by Chocolate Cupcakes

INGREDIENTS

1/2 cup

or 115g) unsalted butter

2 oz

semi-sweet baking chocolate

1/2 cup

unsweetened cocoa powder (not Dutch processed)

3/4 cup

all-purpose flour* (measured correctly)

1/2 tsp

baking soda

3/4 tsp

baking powder

1/4 tsp

salt

large eggs, at room temperature*

1/2 cup

granulated sugar

1/4 cup

packed light brown sugar

1 tsp

vanilla extract

1/2 cup

buttermilk*

and 3/4 cups (330g) confectioners' sugar

2/3 cup

unsweetened cocoa powder

6 tbsp

unsalted butter, softened to room temperature

6 tbsp

heavy cream

1 tsp

vanilla extract

1/3 cup

semi-sweet chocolate chips for decoration, optional