Snickers Cake

INGREDIENTS

• :
• 2½ cups + 1 tablespoon all-purpose flour
• 3 cups granulated sugar
• 1 cup + 1 tablespoon Dutch-process cocoa powder
• 1 tablespoon baking soda
• 1½ teaspoons baking powder
• 1½ teaspoons salt
• 3 eggs, at room temperature
• 1½ cups buttermilk, at room temperature
• 1½ cups strong black coffee, hot
• ¾ cup vegetable oil
• 4½ teaspoons vanilla extract
• 4 tablespoons unsalted butter
• 1 cup granulated sugar
• ¼ cup evaporated milk
• 1½ cups marshmallow fluff
• ¼ cup creamy peanut butter
• 1 teaspoon vanilla extract
• 1½ cups salted peanuts, roughly chopped
• ½ cup unsalted butter, at room temperature
• 4 ounces cream cheese, at room temperature
• ¼ cup
• 2 cups powdered sugar
• 8 ounces milk chocolate, finely chopped
• 4 ounces (½ cup) heavy cream
• Additional
• Chopped peanuts