Go Back
–+ servings
A square slice of rich, dark Easy Snacking Sheet Cake topped with glossy chocolate frosting on a plate.

Easy Snacking Sheet Cake (Last-Minute)

This easy sheet cake is perfect for last-minute baking needs. It uses simple pantry ingredients and comes together quickly for a delicious treat.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 16 pieces
Course: Dessert
Cuisine: American
Calories: 418
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Cake
  • 1 cup butter cubed
  • 1 cup water
  • 1/4 cup baking cocoa
  • 2 cups all-purpose flour
  • 2 cups sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup sour cream
For the Icing
  • 1/2 cup butter cubed
  • 1/4 cup 2% milk plus 2 tablespoons
  • 3 tablespoons baking cocoa
  • 3-3/4 cups confectioners' sugar
  • 1 teaspoon vanilla extract

Equipment

  • Large saucepan
  • 15x10x1-in. baking pan
  • Small saucepan
  • Wire rack

Method
 

  1. In a large saucepan, bring the butter, water, and cocoa to a boil. Remove from heat.
  2. Combine the flour, sugar, baking soda, and salt. Add this to the cocoa mixture. Stir in the sour cream until smooth.
  3. Pour the batter into a greased 15x10x1-inch baking pan. Bake at 350°F (175°C) for 20-25 minutes, or until a toothpick inserted in the center comes out clean.
  4. While the cake bakes, prepare the icing. In a small saucepan, melt the butter. Add the milk and cocoa. Bring to a boil, then remove from heat.
  5. Whisk in the confectioners' sugar and vanilla extract until smooth. Pour the icing over the warm cake.
  6. Cool the cake completely on a wire rack.

Nutrition

Calories: 418kcalCarbohydrates: 72gProtein: 3gFat: 14gSaturated Fat: 9gCholesterol: 35mgSodium: 266mgFiber: 1gSugar: 57g

Notes

This cake is best served warm, but also delicious at room temperature. It is a simple, unfussy dessert that is perfect for any occasion.

Tried this recipe?

Let us know how it was!