The most deliciously moist chocolate banana bundt cake is here. This new take on my banana bundt cake swaps in rich chocolate for a decadent flavor and yields a cake that’s truly heavenly.
I replaced the usual banana/white cake mix with a dark chocolate fudge cake mix and added plenty of chocolate chips to deepen the chocolate taste. The result is a gorgeous, ultra-moist chocolate banana bundt cake that our family has made several times since first trying it.
The Cake Mix Switch Trick
In previous versions I used a banana or yellow cake mix as the base. For this version, a chocolate cake mix pairs beautifully with banana — the two flavors complement each other perfectly. To boost chocolate throughout, I used both mini and regular semi-sweet chocolate chips.
What Size Bundt Pan Should I Use?
Aim for a 12-cup bundt pan or one of similar capacity so the batter fills the pan nicely. I used a standard pan and have also tried a couple of different shapes with good results. Use whatever bundt pan you have that holds a similar volume.
Ingredients for Chocolate Banana Bundt Cake
This bundt cake is simple and practical — most kitchens already have the ingredients. It’s a one-bowl, hand-whisk recipe so there’s minimal cleanup and plenty of family-friendly fun while baking.
You’ll need:
- 3 large eggs (room temperature best)
- 1/3 cup vegetable oil
- 2–3 medium ripe smashed bananas (about 1 cup; not fully black but well-ripened)
- 1 cup buttermilk or whole milk
- 1/4 cup cocoa powder
- 1 15.25 oz box chocolate cake mix (dark chocolate fudge works especially well)
- 1 cup semi-sweet chocolate chips (a mix of mini and regular size is nice)
How to Tell When the Bundt Cake Is Done
Check that the center is fully set before removing the cake from the oven. I typically wait for the timer, open the oven, and lightly press the top of the cake—if it springs back it’s done; if it’s still jiggly, it needs more time. I avoid overreliance on the toothpick method since it can encourage overbaking and drier results.
Optional: For a decadent finish, pour a chocolate ganache over the cooled bundt. Melt 1 cup chocolate chips with 1 cup heavy cream, stir until smooth, cool slightly, then pour generously over the cake.
This chocolate banana bundt cake is chocolate-banana perfection and is sure to become a favorite you return to again and again. I hope you love it as much as we do.
Happy baking!
xo,
Mandy
Get the Recipe:
Chocolate Banana Bundt Cake
Ingredients
- 3 large eggs, room temp
- 1/3 cup vegetable oil
- 2-3 medium ripe smashed bananas, (about 1 cup)
- 1 cup buttermilk or whole milk
- 1/4 cup cocoa powder
- 1 15.25oz box chocolate cake mix
- 1 cup semi sweet chocolate chips
Instructions
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Preheat the oven to 325°F (163°C). Grease the bundt pan with shortening or butter and dust with flour; set aside.
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In a large bowl, whisk together the eggs, oil, mashed bananas, milk, and cocoa powder until combined.
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Sift in the chocolate cake mix, fold in the chocolate chips gently, and pour the batter into the prepared bundt pan. Bake 40–45 minutes or until the center is set and springs back when lightly pressed.
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Let the cake cool in the pan for 1 minute, then invert onto a wire rack or cake stand to cool completely before slicing and serving.