INGREDIENTS
1/2 cup
unsalted butter
1 1/2 cups
granulated sugar
2
large egg
1 tsp
vanilla extract
2 cups
all-purpose flour
2/3 cup
unsweetened cocoa powder
1 tsp
baking soda
1/2 tsp
salt
15
large marshmallows (, halved)
1/2 cup
butter (, softened)
2 tbsp
unsweetened cocoa powder
2 1/2 tbsp
milk
2 cups
powdered sugar
1 tsp
vanilla extract