Banana Bundt Cake with Chocolate Sour Cream Ganache Drizzle

banana bundt
Summer is almost upon us and that means BBQs, picnics, and backyard get-togethers! While I love me a good layer cake, sometimes you just want a simple, unfussy dessert to take to a potluck; and this is is just that sort of cake. This delicious banana cake is a snap to whip up, and it’s totally fine to make ahead — it actually gets more moist after an overnight rest. Do use your blackest, deadest bananas for this recipe for the best flavor. Typically I keep a bag of overripe bananas (peeled) in the freezer and just defrost what I need in the microwave.

I made this cake in my 6-Cup Nordic Ware Heritage bundt pan. It’s my favorite shape because it’s dramatic and doesn’t really need any embellishment; but chocolate + banana is always a good idea so this cake got a little chocolate sour cream ganache drizzle. If you have a 10-12 cup bundt pan, double all the ingredients.

Banana Bundt Cake with Chocolate Sour Cream Ganache Drizzle

Serves 8


For the Banana Bundt Cake:

  • 210g all purpose flour
  • 1 tsp baking soda
  • Heaped 1/4 tsp kosher salt
  • 113g butter, room temperature
  • 200g / 1 cup sugar
  • 1 large egg, room temperature
  • 115g / 1/2 cup sour cream, room temperature
  • 1/2 tsp pure vanilla extract
  • 325g / about 2 large very ripe mashed bananas

For the Chocolate Sour Cream Ganache:

  • 40g good quality chocolate, milk or dark, chopped
  • 40g sour cream


For the Banana Bundt Cake:

  1. Preheat the oven to 350F. Grease and flour a 6-cup bundt pan.
  2. In a medium bowl, whisk together the flour, baking soda, and salt. Set aside. In a small bowl or jug, whisk together the sour cream, vanilla, and bananas. Set aside.
  3. In a large bowl, cream together the butter and sugar on medium-high speed until pale and creamy (about 5 minutes). Add the egg and mix in thoroughly.
  4. On low speed, mix in the dry ingredients until just combined. Gently mix in the sour cream/vanilla/banana mixture until you have a smooth batter.
  5. Pour into the prepared bundt pan and level the top with an offset palette knife. Bake for 45-55 minutes, or until a skewer inserted into the center comes out clean. If the cake is browning too quickly, cover it with a piece of foil to prevent scorching.
  6. Cool on a wire rack for 10-15 minutes before turning out of the bundt pan. Allow cake to cool completely before glazing.

For the Chocolate Sour Cream Ganache:

  1. Combine the chocolate and sour cream in a heatproof bowl and heat over a bain-marie. Whisk constantly until the chocolate is melted and the mixture is smooth. Alternatively, you can melt the chocolate in 20 second increments in the microwave, then whisk in the sour cream. Just ensure that the sour cream is at room temperature; otherwise, the ganache may curdle.
  2. Allow to cool at room temperature slightly before drizzling over the cake.

2 thoughts on “Banana Bundt Cake with Chocolate Sour Cream Ganache Drizzle

  1. This looks delicious!! Would this recipe work well in a regular 9″ by 5″ loaf pan or perhaps a round cake pan? I love that this is a smaller cake!

    1. I’m pretty sure it would work in a 9×5 pan. The baking time might be a little different; I’d probably still start checking around 45 min. It’s definitely a nice size for a small gathering!

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