Chocolate Sheet Cake

Ingredients

For the Cake

  • 2½ cups all-purpose flour
  • 2 cups granulated sugar
  • 1 cup cocoa powder
  • 1 tbsp baking powder
  • 1 tsp baking soda
  • ½ tsp salt
  • 3 large eggs
  • 1 cup vegetable oil
  • 1 cup milk
  • 1 cup hot coffee or hot water
  • 1 tbsp vanilla extract

For the Chocolate Frosting

  • 1 cup butter, softened
  • ½ cup cocoa powder
  • 4 cups icing sugar
  • ½ cup milk
  • 1 tsp vanilla extract
  • Chocolate sprinkles for topping

Instructions

1. Prepare the oven

  • Preheat oven to 350°F (175°C).
  • Grease a sheet cake pan or line with parchment paper.

2. Make the cake batter

In a large bowl:

  1. Mix flour, sugar, cocoa powder, baking powder, baking soda, and salt.
  2. Add eggs, oil, milk, and vanilla.
  3. Mix until smooth.
  4. Slowly pour in hot coffee (or hot water) and stir well.

The batter will be thin — this is normal.


3. Bake

  • Pour batter into prepared pan.
  • Bake for 30–35 minutes or until a toothpick comes out clean.

Let cool completely before frosting.


4. Make the frosting

  1. Beat butter until creamy.
  2. Add cocoa powder and mix well.
  3. Gradually add icing sugar.
  4. Pour in milk and vanilla.
  5. Beat until fluffy and smooth.

5. Decorate

  • Spread frosting evenly over cooled cake.
  • Top with chocolate sprinkles.

Cut into squares and enjoy!