This is a beautiful marble bundt cake that keeps well and freezes wonderfully. An irresistible chocolate orange cake recipe to make during cold months, when oranges are in season. I made a few tweaks to the original recipe, and it's now even better than it was, with more flavor and a decadent chocolate ganache glaze!
Grease a 10 or 12-cup bundt cake pan (26cm) with 2 tablespoons shortening, covering every angle, nook and cranny. Dust with 2 tablespoons all-purpose flour, shaking off excess. Reserve.
Beat softened 1 ½ cups unsalted butter in a large bowl with an electric mixer, or in a stand mixer with the paddle attachment, slowly adding 3 cups sugar and beating for 2 to 3 minutes after all is added.
Add 5 eggs, one at a time, beating well after each addition.
Add 2 tablespoons orange zest, 3 tablespoon orange liqueur or orange juice, and 1 teaspoon vanilla extract.
Sift 3 cups all-purpose , 1 teaspoon baking soda and ¼ teaspoon salt together in a small bowl or have them measured and sift directly over the butter mixture, as I do.
Add the dry ingredients (also called the flour mixture) in three additions alternating with ¾ cup milk in two additions. Don't overbeat after adding flour, simply beat just until incorporated.
Transfer 1 cup of this mixture to a small bowl and mix into it the sifted ⅓ cup unsweetened cocoa powder. Gently mix until you have a smooth batter.
Add half the orange batter into the prepared bundt pan, spreading evenly. Drop half of the cocoa mixture over it, and swirl a few times with the tip of a knife. Repeat with the remaining batters. You will have to layers of marbled cake mix.
Bake for 1 hour or until a cake tester or toothpick inserted in the center comes out clean. It might take several more minutes.
Transfer to a wire rack and let cool for about 20 minutes.
Remove from the bundt pan; it will still be quite hot, so be careful. Place on the cooling rack and let cool completely before glazing. If you know your pan (they differ a lot depending on the material and use), remove it the way you always do.
Pour the chocolate glaze on top of the cake and let it drip down the sides. You can scoop the drippings and pour them over again. Do this quickly before it sets. You can decorate with orange slices, orange peel, or rind.m
For the ganache glaze:
Finely chop 8 ounces semisweet chocolate and put it in a bowl, preferably glass.
In a small saucepan heat 1 cup heavy cream with ¼ cup brown sugar. Remove just when it's about to boil. It should have small bubbles in the outer rim.
Immediately cover the chopped chocolate with the hot cream. Let stand 1 minute to soften.
With a wire whisk start mixing from the middle out. The chocolate will mix with the cream and create a smooth and shiny chocolate mixture.
Add 1 tablespoon corn syrup, mix well and it's ready to use.
Notes
Sift the cocoa powder and baking soda: this is important as they can clump during storage and will not dissolve during baking.Chocolate chips: if you want to have some crunch or more chocolate flavor, you can add mini semisweet chocolate chips (¼ cup or so) to the chocolate batter, together with the cocoa powder.Layer cake: you can change the cake form and bake it in two 9-inch round springform pans or three 8-inch ones. Fill and frost with ganache or another frosting you like.