Ingredients
The following ingredients have 16 Servings
- 6 oz unsalted butter (at room temperature)
- 4.75 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
- 7.8 oz all-purpose flour ((1¾ cups) )
- 3 oz unsweetened cocoa powder ((1 cup), sifted)
- 1½ tsp baking soda
- ½ 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 mini marshmallows ((2 ½ cup))
- 6.5 oz toasted walnuts ((1 3/4 cup), coarsely chopped)
