Homemade Choco-Bliss Snack Cakes

INGREDIENTS

• :
• 1 cup unsalted butter
• 1/3 cup Dutch-process cocoa powder
• 1 cup hot water
• 2 cups all-purpose flour
• 1 teaspoon espresso powder
• 2 cups granulated sugar
• 1 teaspoon baking soda
• ½ teaspoon salt
• ½ cup buttermilk
• 2 eggs
• 1 teaspoon vanilla extract
• 1/3 cup Dutch-process cocoa powder, sifted
• ½ cup semisweet chocolate chips
• ¼ teaspoon salt
• ½ cup heavy cream
• ¼ cup unsalted butter, at room temperature
• ½ cup vegetable shortening, at room temperature
• 4 cups powdered sugar, sifted
• 1 cup semisweet chocolate chips
• 1 tablespoon light corn syrup
• ½ teaspoon vanilla extract
• 1/3 cup heavy cream
• ¾ cup powdered sugar, sifted