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Microwave Chocolate Cake

Microwave Chocolate Cake cooks into a light, moist chocolaty dessert. "A farm wife with four children, I've made this cake many times," says Mary Brenneman of Tavistock, Ontario.
  • Total Time
    Prep/Total Time: 25 min.
  • Makes
    9 servings


  • 1-1/2 cups all-purpose flour
  • 1 cup sugar
  • 3 tablespoons baking cocoa
  • 1 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1 cup cold water
  • 1/3 cup vegetable oil
  • 1 tablespoon vinegar
  • 1 teaspoon vanilla extract
  • 1 cup sugar
  • 3 tablespoons cornstarch
  • 2 tablespoons baking cocoa
  • 1 cup boiling water
  • Dash salt
  • 1 tablespoon butter
  • 1 teaspoon vanilla extract


  • In a bowl, combine the first five ingredients. Stir in water, oil, vinegar and vanilla until well blended. Pour into an ungreased 8-in. square microwave-safe dish.
  • Microwave on high for 3-5 minutes, turning the dish every minute, or until a toothpick inserted in the center comes out clean.
  • In a 1-qt. microwave-safe bowl, combine sugar, cornstarch and cocoa. Stir in water and salt. Microwave 30 seconds more. Stir in butter and vanilla. Serve with warm cake.
Nutrition Facts
1 piece: 351 calories, 10g fat (2g saturated fat), 3mg cholesterol, 236mg sodium, 64g carbohydrate (43g sugars, 1g fiber), 3g protein.

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Average Rating:
  • Tambudzai
    Nov 19, 2017

    Delicious,moist and chocolatey. Wonderfully thick gooey suace too. Coincidentally my first ever microwave bake and I am hooked

  • NadiaPedley
    Mar 21, 2016

    Fantastic recipe.Have 4 'always hungry' boys...cake disappeared within minutes ??

  • sicamoon83
    Sep 24, 2011

    I lost my grandmother's recipe for this type of microwave cake and I am very glad that I found a substitute. The frosting is the best part but I love the fact that the cake is not extremely sweet and that the frosting makes up for it. It is a great balance.

  • katrina_lyn
    Aug 8, 2011

    This is not the best cake I've ever had, but it is the best microwave cake I've ever had. The cake itself is pretty bland, but it has a nice texture. The surface is kind of sticky so it didn't cut too cleanly but it came out of the pan clean. The real winner is the chocolate sauce. It's nice, thick, decant and chocolatey. It makes enough sauce to generously cover each piece. This sauce would be good on many other desserts.