Triple Chocolate Moist Sheet Cake

This recipe produces an incredibly soft, tender cake topped with a rich, pourable chocolate ganache and classic sprinkles. It is the perfect dessert for celebrations or a cozy weekend treat.

 Ingredients

• For the Cake:

  • 2 cups all-purpose flour 

  • 2 cups granulated sugar 

  • ¾ cup unsweetened cocoa powder 

  • 2 tsp baking soda and 1 tsp baking powder

  • 1 tsp salt 

  • 1 cup buttermilk (at room temperature) 

  • ½ cup vegetable oil 

  • 2 large eggs 

  • 2 tsp vanilla extract

  • 1 cup hot coffee or boiling water (this “blooms” the cocoa for deeper flavor) 

• For the Topping:

  • 1 cup semi-sweet chocolate chips 

  • ½ cup heavy cream 

  • Chocolate sprinkles 

 Step-by-Step Instructions

1. Prep Work  Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.

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

3. Add Wet Ingredients  Add the eggs, buttermilk, oil, and vanilla extract.  Beat on medium speed for about 2 minutes until well combined.

4. The Secret Step  Lower the speed and carefully pour in the hot coffee or boiling water.  The batter will be very thin—this is normal and ensures a moist crumb!

5. Bake  Pour the batter into the prepared pan. Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean.  Let the cake cool completely in the pan.

6. Prepare the Ganache  Heat the heavy cream until it just begins to simmer. Pour it over the chocolate chips in a small bowl.  Let it sit for 5 minutes, then stir until shiny and smooth.

7. Glaze and Garnish  Pour the warm ganache over the cooled cake, spreading it to the edges.  Immediately top with a generous layer of chocolate sprinkles while the glaze is still wet.

8. Set and Slice  Let the glaze set for at least 30 minutes before slicing into squares. 

 Q/A Section

Q: Can I taste the coffee in the cake? A: Not at all!  The coffee simply intensifies the chocolate flavor. If you prefer to avoid it, boiling water works perfectly fine.

Q: Why is my batter so watery? A: Don’t worry!  This high-moisture batter is exactly what makes the cake so soft and prevents it from becoming dry.

Q: Can I make this in a different pan? A: Yes!  This recipe works for two 9-inch round pans (bake for 30-35 mins) or about 24 cupcakes (bake for 18-22 mins).

Q: How should I store the leftovers? A: Cover the pan tightly with foil or plastic wrap.  It stays moist at room temperature for up to 3 days or in the fridge for up to 5 days.