chocolate sheet cake

Ingredients For chocolate sheet cake

• CAKE BATTER
• 2 c

  sugar
• 2 c

  flour
• 1/4 tsp

  cinnamon
• 1 tsp

  baking soda
• 1/4 tsp

  salt
• 1 c

  water
• 3 Tbsp

  cocoa powder
• 1/2 c

  buttermilk
• 2

  eggs
• 1 tsp

  vanilla extract
• 1/2 c

  butter
• 1/2 c

  shortening
• FROSTING
• 1 stick

  butter
• 4 Tbsp

  cocoa powder
• 6 Tbsp

  milk
• 1 tsp

  vanilla extract
• 16 oz

  powdered sugar
• 1 c

  nuts (optional)