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Sliced chocolate brownie cake and a metal spatula.
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4.59 from 51 votes

Chocolate Brownie Cake

Chocolate Brownie Cake - this dessert recipe is so good. It's a mix between a brownie and chocolate sheet cake. Yum!
Prep Time15 mins
Cook Time40 mins
Total Time55 mins
Course: Desserts
Cuisine: American
Keyword: brownie, cake, chocolate
Servings: 16 slices
Calories: 492kcal
Author: Lynda


Chocolate Syrup

  • ¼ cup unsweetened cocoa powder
  • ½ cup water
  • 1 cup sugar
  • 1 tsp vanilla
  • ¼ tsp salt

Brownie Batter

  • cups all-purpose flour
  • 1 tsp baking powder
  • 1 tsp salt
  • 2 Tbsp espresso powder
  • 10 Tbsp butter
  • ¾ cup baking cocoa
  • ¼ cup vegetable oil
  • 2 cups sugar
  • 4 large eggs
  • 2 tsp vanilla extract
  • two-thirds cup chocolate chips
  • Chocolate Syrup

Chocolate Icing

  • cups chocolate chips
  • 3 Tbsp corn syrup
  • 1 stick butter


  • To make the syrup: in a medium or large saucepan, whisk the cocoa powder and sugar until well blended. Add water and whisk over medium-high until it starts to boil and becomes a little frothy. Continue boiling for approximately 3 minutes. Reduce heat and allow to simmer for 2 more minutes. Remove from the heat and add salt. Let cool.
  • Preheat oven to 350 degrees. Line bottom of 13x9 pan with aluminum foil and spray with non-stick cooking spray.
  • Combine flour, baking powder, salt, and espresso powder and set aside.
  • Microwave butter until melted in a medium size glass bowl. Add cocoa and oil and whisk until smooth.
  • Transfer cocoa mixture to a bowl of an electric mixer. Stir in sugar. Add eggs, one at a time, mixing well after each addition. Add vanilla. Gradually add flour mixture. Pour in chocolate syrup and chocolate chips.
  • Pour batter into prepared 13x9 pan and bake for 25-30 minutes or until done. Let cool before icing.
  • To make the icing: Melt chocolate chips and butter together in a microwave-safe bowl in 30 second intervals on high, stirring well after each segment. (It took me a total of one minute + an additional 10 seconds.) Add corn syrup and stir until smooth. Let sit for 5 minutes before pouring over brownies.



Serving: 1slice | Calories: 492kcal | Carbohydrates: 68g | Protein: 5g | Fat: 24g | Saturated Fat: 13g | Polyunsaturated Fat: 10g | Trans Fat: 1g | Cholesterol: 81mg | Sodium: 340mg | Fiber: 3g | Sugar: 53g