Ingredients 0/10
Why This Recipe Stands Out
Best Cooking Tips
- Use room temperature ingredients for a smoother batter.
- Avoid overmixing to keep the cake light and fluffy.
Step 1
Heat your oven to 300Β°F (150Β°C) and grease a 12-cup Bundt pan really well, then dust it lightly with flour to keep the cake from sticking. In a large bowl, beat the sugar and margarine together with an electric mixer until the mixture is light and fluffy. Add the eggs one at a time, mixing briefly after each one, then stir in the sour cream and vanilla.
Step 2
In another bowl, sift together the flour, baking soda, and baking powder. Add this to your wet ingredients in four parts, beating well after each addition so everything is fully combined.
Step 3
Scoop out about 2 1/2 cups of the batter into a smaller bowl and mix in the cocoa powder until itβs a rich, dark color. Fold in the white chocolate chips here. Then, stir the dark chocolate chips into the remaining lighter batter.
Step 4
To assemble, pour half of the light batter into the Bundt pan, then spoon in the chocolate batter on top, and finish with the rest of the light batter. Use a knife or skewer to gently swirl the batters together if you like a marbled effect.
Step 5
Bake for about 1 hour and 20 minutes, or until the top is golden and a knife inserted into the center comes out clean. Let the cake cool in the pan on a wire rack for 20 minutes before carefully running a knife around the edges to loosen it. Then flip it onto a plate or rack to cool completely.