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

Easy Snacking Sheet Cake (Last-Minute)

This easy sheet cake is perfect for last-minute baking needs. It's a simple, one-bowl recipe that comes together quickly and is ideal for busy individuals.
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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 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 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 into 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. Remove from heat.
  5. Whisk in the confectioners' sugar and vanilla until smooth. Pour this 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 designed for speed and simplicity, making it a great option when you need a dessert in a hurry. The quick icing adds a sweet finish without much extra effort.

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