chocolate sheet cake

Ingredients For chocolate sheet cake

• 1 c

  butter
• 1 c

  water
• 1/2 c

  cocoa powder
• 2 c

  all purpose flour
• 2 c

  sugar
• 1 tsp

  salt
• 1 tsp

  baking soda
• 1 tsp

  vanilla extract
• 1 c

  sour cream
• 2

  eggs
• 1 c

  chopped nuts
• 1/2 c

  butter
• 1/2 c

  cocoa
• 1-8 Tbsp

  milk
• 4 c

  powdered sugar
• 1 tsp

  vanilla extract