This chocolate sheet cake pan is the ultimate recipe! Scotch chocolate sheet cake recipe is creamy, fluffy with a blend of perfect spices. Take it to your next party!
Combine sugar, flour, cinnamon, salt and soda in large bowl and set aside. In saucepan bring butter, cocoa, and water to boil and pour over flour-sugar mix. Stir in eggs, buttermilk, and vanilla. Pour into large thin cookie sheet. Bake at 350 for 20-30 min. Make sure you start checking it at 20 minutes.
For smoother frosting sift powder sugar and whisk rapidly while pouring into cooked ingredients.