cinnamon fudge birthday cake

Ingredients For cinnamon fudge birthday cake

• 2 cups all-purpose flour
• 1/2 cup unsweetened cocoa
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 teaspoon ground cinnamon
• 1 3/4 cups sugar
• 1/2 cup Land O Lakes® Butter, softened
• 1/3 cup vegetable oil
• 1 Land O Lakes® Egg
• 1 tablespoon vanilla
• 1 cup buttermilk*
• 3/4 cup hot coffee
• 4 (1-ounce) squares semi-sweet baking chocolate
• 1 pint (2 cups) Land O Lakes® Heavy Whipping Cream
• 1 tablespoon Land O Lakes® Butter
• 1 tablespoon light corn syrup
• 1/4 cup powdered sugar
• 1/4 teaspoon ground cinnamon