Description
Chocolate marble banana Bundt cake is a moist banana cake swirled with silky chocolate ganache and topped with a glossy drizzle. The fusion of sweet bananas and rich chocolate creates an indulgent yet comforting dessert perfect for holidays, family dinners, or casual gatherings.
Ingredients
Scale
Ganache (swirl & topping):
- 2 (4 oz) semi-sweet chocolate bars, finely chopped
- 1 cup heavy cream
Cake Base:
- 1 ½ cups mashed ripe bananas
- 3 cups all-purpose flour
- 1 ½ teaspoons baking powder
- 1 teaspoon baking soda
- ½ teaspoon ground cinnamon
- ½ teaspoon salt
- ¾ cup unsalted butter, softened
- 1 cup granulated sugar
- ½ cup brown sugar
- 3 large eggs
- 2 teaspoons vanilla extract
- 1 ⅓ cups buttermilk
Optional Add-Ins:
- Chopped nuts
- Shredded coconut
- Sprinkle of sea salt
Instructions
- Prepare the ganache: Heat cream until simmering, pour over chopped chocolate, let sit, then stir until smooth. Reserve half for swirling, chill the rest for topping.
- Preheat oven to 350°F (177°C). Grease a 10-inch Bundt pan.
- Mash bananas. Whisk flour, baking powder, baking soda, cinnamon, and salt.
- Cream butter and sugars until fluffy. Mix in eggs, vanilla, and mashed bananas.
- Alternate adding dry ingredients and buttermilk, mixing gently until combined.
- Assemble: Spread ⅓ batter in pan, drizzle with half ganache, swirl with knife. Repeat layers, ending with batter. Swirl lightly.
- Bake 60–75 minutes, tenting with foil if browning too fast. Check doneness with a toothpick.
- Cool in pan 2 hours, then invert onto rack.
- Warm reserved ganache until pourable, drizzle over cake, slice, and serve.
Notes
- Use ripe bananas for best sweetness and moisture.
- Avoid overmixing to keep texture tender.
- Let ganache thicken slightly before swirling so it doesn’t sink.
- Variations: make vegan with flax eggs, plant-based butter, and coconut cream; reduce sugar with stevia or maple syrup; add spices like cardamom or nutmeg.
- Storage: Room temp 2 days, fridge 5 days, freezer 3 months.
- Prep Time: 25 minutes
- Cook Time: 65 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 420
- Sugar: 32 g
- Sodium: 310 mg
- Fat: 21 g
- Saturated Fat: 10 g
- Unsaturated Fat: 10 g
- Trans Fat: 0 g
- Carbohydrates: 55 g
- Fiber: 2 g
- Protein: 6 g
- Cholesterol: 75 mg