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Best One-Bowl Chocolate Cake Recipe

The easiest and best One-Bowl Chocolate Cake recipe is super chocolatey, light, fluffy, tender, and moist and hardly any more work than using a box cake mix.  This chocolate cake made from scratch is simply the best!

Prep Time
10 mins
Cook Time
10 mins
Total Time
45 mins
Servings: 12 servings
Calories: 566 kcal
Course: Cake
Cuisine: American

Ingredients

Cake
  • 2 cups all-purpose flour (250g)
  • 2 cups granulated sugar (400g)
  • 3/4 cup unsweetened cocoa powder
  • 2 teaspoons baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 1 cup buttermilk
  • 1/2 cup vegetable oil
  • 2 large eggs
  • 2 teaspoons pure vanilla extract
  • 1 cup boiling water
Chocolate Frosting
  • 1 cup salted butter, softened (2 sticks)
  • Pinch of salt
  • 3/4 cup cocoa powder
  • 4 cups powdered sugar
  • 2 teaspoons pure vanilla extract
  • 1/4 cup heavy cream + more as needed

Instructions

    Cup of Yum
  1. Preheat oven to 350°F. Spray a 9x13-inch baking dish with cooking spray or line two 9-inch cake pans with parchment paper circles and spray sides with cooking spray.
  2. Whisk flour, sugar, cocoa powder, baking soda, baking powder, and salt together in a large bowl.  
  3. Add the buttermilk, oil, eggs, and vanilla and mix on medium speed using a hand mixer or stand mixer until combined.  
  4. Add the hot water and mix on low speed until combined. Scrape bottom and sides of the bowl and mix on medium speed for 30 seconds.
  5. Pour into the baking dish or divide evenly between cake pans. Bake for 32-37 minutes for a rectangular cake, or 30-35 minutes for 9-inch round cake pans until a toothpick inserted into the center of the cake comes out clean.  
  6. Cool completely before frosting.
Chocolate Frosting
    Cup of Yum
  1. In a large bowl, beat the butter, salt and cocoa powder together until creamy and smooth.
  2. Gradually add the powdered sugar 1 cup at a time, with 1 tablespoon of the cream at a time, mixing between each addition and scraping down the sides of the bowl as needed. Add additional cream as needed and continue to beat for about 5 minutes until light and fluffy.

Nutrition Information

Calories 566kcal (28%) Carbohydrates 97g (32%) Protein 6g (12%) Fat 20g (31%) Saturated Fat 12g (60%) Polyunsaturated Fat 1g Monounsaturated Fat 5g Trans Fat 1g Cholesterol 81mg (27%) Sodium 586mg (24%) Potassium 236mg (7%) Fiber 4g (16%) Sugar 74g (148%) Vitamin A 624IU (12%) Vitamin C 1mg (1%) Calcium 73mg (7%) Iron 3mg (17%)

Nutrition Facts

Serving: 12servings

Amount Per Serving

Calories 566

% Daily Value*

Calories 566kcal 28%
Carbohydrates 97g 32%
Protein 6g 12%
Fat 20g 31%
Saturated Fat 12g 60%
Polyunsaturated Fat 1g 6%
Monounsaturated Fat 5g 25%
Trans Fat 1g 50%
Cholesterol 81mg 27%
Sodium 586mg 24%
Potassium 236mg 5%
Fiber 4g 16%
Sugar 74g 148%
Vitamin A 624IU 12%
Vitamin C 1mg 1%
Calcium 73mg 7%
Iron 3mg 17%

* Percent Daily Values are based on a 2,000 calorie diet.