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Marble Cake
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5 from 1 vote

Enhanced Marble Cake

Marble cake made with cake mix, flour, sugar and other ingredients to make it more like scratch.
Prep Time10 mins
Cook Time30 mins
Total Time40 mins
Course: Dessert
Cuisine: American
Servings: 12
Author: Cookie Madness



  • 1 box 15.25 oz of Pillsbury Moist Supreme Classic Yellow cake mix or Betty Crocker Golden Vanilla (two good flavors with pudding added)
  • 1/2 cup granulated sugar
  • 1/4 teaspoon salt
  • 4 large eggs
  • 2 teaspoons vanilla
  • 1/3 cup canola oil or any vegetable oil
  • 4 tablespoons melted butter I used unsalted
  • 1/4 cup whole milk
  • 1 cup water
  • 2/3 cup 3 oz all-purpose flour or 3/4 cup (3 oz) cake flour
  • 3 tablespoons unsweetened cocoa powder
  • 2 tablespoons sour cream

Chocolate Frosting

  • 1 1/2 oz unsweetened chocolate chopped
  • 1 1/2 oz semisweet chocolate chopped
  • 1 1/2 sticks 6 oz unsalted or salted butter, softened
  • 3 tablespoons unsweetened natural cocoa powder
  • 3 cups powdered sugar
  • 3 tablespoons room temperature whole milk plus more if needed
  • 2 teaspoons vanilla
  • Pinch or two of salt if using unsalted butter


  • Preheat oven to 350 degrees F. Spray two 9 inch round cake pans with sides that are at least 2 inches high, with flour-added baking spray.
  • Combine cake mix, sugar, salt, eggs, vanilla, oil, butter, milk and water in a large bowl (do not add flour yet). Beat with an electric mixer for two minutes, scraping sides of bowl well. Add the flour and stir until mixed.
  • In a small mixing bowl, mix together cocoa powder and sour cream. Stir in 1 cup of the vanilla batter.
  • Divide vanilla batter evenly among pans. Drop globs of chocolate batter over the vanilla batter.
  • Bake for 30 minutes on center rack or until cakes test done. Let cool in pans for 10 minutes, then carefully invert. Let cool completely.
  • To make the frosting, melt both chocolates in microwave or double boiler and set aside to cool for about 30 minutes. Beat the butter until creamy. Stir in the cocoa power, about a cup of the powdered sugar, and the slightly cooled (it can be a little warm) melted chocolate. Scrape sides of bowl and beat well. Add remaining powdered sugar, then add milk, vanilla and salt, beating and scraping until you get the consistency you like.


For the frosting, make sure all ingredients are at room temperature and not cool at all. If ingredients are too cool, some of the chocolate may re-solidify giving you little chunks of chocolate in the frosting. It's happened to me a couple of times. People actually like the little chunks, but I don't think the frosting looks as nice when that happens.