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–+ servings
A moist slice of Easy Snacking Sheet Cake topped with glossy chocolate frosting on a small plate.

Easy Snacking Sheet Cake (Last-Minute)

This easy sheet cake is perfect for busy bakers who need a quick dessert. It uses simple ingredients and comes together in no time, making it ideal for last-minute cravings or unexpected guests.
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Prep Time 15 minutes
Cook Time 25 minutes
Cooling Time 30 minutes
Total Time 1 hour 10 minutes
Servings: 12 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 plus 2 tablespoons 2% milk
  • 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 mixture 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 until smooth. Pour the icing over the warm cake.
  6. Cool the cake completely on a wire rack before serving.

Nutrition

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

Notes

This cake is best served warm with the icing poured over it. It's a simple yet satisfying treat that requires minimal effort.

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