INGREDIENTS
•
For the Cake:
•
2 1/2 cups + 1 tablespoon all-purpose flour
•
3 cups granulated sugar
•
1 cup + 1 tablespoon Dutch-process cocoa powder
•
1 tablespoon baking soda
•
1 1/2 teaspoons baking powder
•
1 1/2 teaspoons salt
•
3 eggs, at room temperature
•
1 1/2 cups buttermilk, at room temperature
•
1 1/2 cups strong black coffee, hot
•
3/4 cup vegetable oil
•
4 1/2 teaspoons vanilla extract
•
For the Toasted Marshmallow Filling:
•
16 large marshmallows
•
1 cup powdered sugar
•
1 cup unsalted butter, at room temperature
•
1/2 teaspoon vanilla extract
•
1 (7 1/2-ounce) jar Marshmallow Fluff
•
For the Malted Chocolate Frosting:
•
2 cups unsalted butter, at room temperature
•
4 cups powdered sugar
•
3/4 cup Ovaltine Classic
•
1 tablespoon vanilla extract
•
Pinch of salt
•
8 ounces semisweet or dark chocolate chocolate, melted and cooled
•
1/2 cup heavy cream