INGREDIENTS
6 oz
butter (at room temperature)
4 3/4 oz
granulated sugar ((2/3 cup))
5 oz
brown sugar ((2/3 cup packed))
2
eggs (at room temperature)
2 tsp
vanilla extract
8 oz
buttermilk ((1 cup), at room temperature)
4 oz
sour cream ((1/2 cup), at room temperature)
2 tbsp
water or brewed coffee
7 4/5 oz
all-purpose flour ((1¾ cups) )
3 oz
unsweetened cocoa powder ((1 cup), sifted)
1 1/2 tsp
baking soda
1/2 tsp
salt
8 oz
unsweetened chocolate (finely chopped)
6 cups
powdered sugar ((24 oz))
8 oz
unsalted butter ((2 sticks), at room temperature)
6 tbsp
milk (more if necessary)
2 tsp
vanilla extract ((can sub with other extracts))
1/4 tsp
salt
12 oz
semi-sweet chocolate (chopped)
12 oz
heavy cream
5 oz
miniature marshmallows ((2 ½ cup))
6 1/2 oz
toasted walnuts ((1 3/4 cup), coarsely chopped)