Chocolate sheet cake is moist, fudgy & such an easy recipe.

Chocolate Sheet Cake

This chocolate sheet cake is an easy recipe made with everyday ingredients that you already have in your pantry. It's moist and fudgy with a delicious chocolate flavor and topped with chocolate frosting

Course Dessert
Prep Time 25 minutes
Cook Time 30 minutes
Total Time 1 hour 30 minutes
Servings 15 slices


Chocolate Sheet Cake

  • 1 3/4 cup all-purpose flour
  • 3/4 cup cocoa powder , plus more for greasing the pan
  • 1 tsp baking soda
  • 1/4 tsp salt
  • 2/3 cup vegetable oil
  • 1 3/4 cup white sugar
  • 3 large eggs
  • 1 tsp vanilla extract
  • 1 cup milk , 1%, 2%, whole or buttermilk

Chocolate Frosting

  • 3/4 cup unsalted butter
  • 3-4 cups powdered sugar
  • 1/2 cup cocoa powder
  • 4-6 tbsp cream , or milk


Chocolate Sheet Cake

  1. Preheat the oven to 350F degrees. 

  2. In a large bowl whisk together the flour, cocoa powder, baking soda and salt. 

  3. Beat together the oil, sugar, vanilla and eggs in a separate bowl. Then beat in the milk. 

  4. Carefully mix in the dry ingredients. 

  5. Grease a 9x13 inch pan and sprinkle with cocoa powder. Then pour the cake batter into the pan. 

  6. Bake for 28-32 minutes, or until an inserted toothpick comes out clean. 

Chocolate Frosting

  1. Beat the butter until well softened. 

  2. Whisk together 3 cups powdered sugar and the cocoa powder. 

  3. Beat the cocoa powder & powdered sugar mixture into the butter about 1 cup at at time, alternating with 1 tablespoon of cream/milk. 

  4. Beat in the rest of the powdered sugar about 1/2 cup at a time, alternating with 1 tablespoon of cream until the desired sweetness and consistency is reached. 

  5. Frost the cooled chocolate cake. 

Recipe Notes

*Leftovers can be stored in an airtight container at room temperature for 3 days.

**Unfrosted cake can be wrapped tightly and frozen. Thaw in the fridge overnight.