Banankage (Banana Cake with Walnuts and Chocolate Ganache)

A beautiful cake with delicious banana and walnut flavor, a light dash of cardamom, and rich chocolate ganache on top.

Rating: 5.00
(1)
April 30, 2024

A Flashback to 2020!

Now, I know nobody really wants to remember the terrible year of 2020, when the pandemic exploded. But it simultaneously feels like so long ago and just yesterday – does anyone else feel the same? One positive thing that came out of it for us, though, was Skandibaking. Because we had so much time on our hands and were stuck in the house, we started baking a lot. Soon, we were developing our own recipes and eventually created this blog. Now, we’ve been around for nearly 4 years, slowly building our following on social media and with a fantastic audience who bakes our recipes, sends us pictures, and leaves us wonderful comments and reviews. But for us, like everyone else, guess what it all started with? Banana bread.

A banana walnut cake with chocolate ganache.

Banana Bread or Banana Cake?

Putting bananas in cake and calling it “banana bread” is a wonderful invention. First of all, it’s a baked good made with overripe and cheap fruit. This can appeal to anyone who has ever come home to a few brown bananas on the kitchen counter. Second, it’s customizable, and you can add anything from peanut butter and chocolate chips to cinnamon and walnuts. Finally, it’s called “bread,” so really, you can eat it for breakfast. The other reason it’s called bread is because it’s baked in a loaf tin, making it easy to cut slices. The only difference between this and banana cake is that the cake is in a round cake tin and is slightly fancier. But by all means, you can still eat it for breakfast 🙂

Flavorful and Well-balanced

Our banana cake recipe is probably not revolutionary. However, we’ve added some small twists that we think make it a delicious and unique cake. The cake itself is beautifully fluffy, with flecks of banana throughout it that are characteristic of banana bread. It has a delicious banana flavor, but not enough to overpower the other additions. The brown sugar adds a caramel flavor, but we don’t add so much that the cake becomes dense. Walnuts are added for crunch and nuttiness, and a dash of cardamom gives a light floral note to the cake. Finally, the chocolate ganache is just the right level of richness to round out the rest of the flavors. Yum!

A banana walnut cake with chocolate ganache.

Simple but Impressive!

As I mentioned already, one of the best parts about banana bread is that it’s often made with leftover overripe fruit that would otherwise be wasted. But genuinely, you might end up buying extra bananas to make this cake – that’s how good it is. It’s super simple to make but so tasty and a hit with the whole family. You can make it on a Sunday as a little treat for the week ahead, or make it for a special occasion! You can customize the decoration however you like, so whether you want to double the recipe and make it two layers or four layers, or just add some more festive decorations on top, it’s sure to impress for any occasion. And if you know anyone who loves banana bread, make this for them – we promise it’ll go down well.

Ingredients for Banana Cake

For this cake, you’ll need wet ingredients: bananas, vegetable oil, milk, eggs, vanilla extract, brown sugar, and granulated sugar. Here, you can make substitutions for the oil (use any other type, although some, like olive oil, may change the taste), sugar (you could use coconut sugar, for example), and milk (any plant-based milk will work). Then, you’ll need dry ingredients: all-purpose or plain flour, baking powder, baking soda, cardamom, salt, and walnuts. You can add other types of flour if you like (whole wheat, rye, spelt) but use mostly all-purpose, otherwise the cake may become too dense. Instead of cardamom, you could add cinnamon or cloves. Finally, use any other nut instead of walnuts – almonds or hazelnuts would be delicious! For the ganache, you’ll need dark chocolate, which can be replaced with milk chocolate if you want it to be sweeter, and heavy cream.

A slice of banana walnut cake on a plate.

Instructions

For the cake, start by mashing your bananas. Then, add the rest of the wet ingredients and whisk together. Mix the dry ingredients (minus the walnuts) and add to the wet, folding or whisking until you have a batter with no dry spots of flour. Add the walnuts to the batter and pour into a lined baking tin. Bake for 25-40 minutes – this is a wide range because it can really vary depending on your oven – until a cake tester or knife inserted into the middle of the cake comes out clean. Let this cool and make your ganache. Heat up the heavy cream until steaming, then add the chopped-up chocolate or chocolate chips. Wait for about 5 minutes, then stir until they melt and you have a shiny mixture. Let this cool until it reaches a thick but spreadable texture. Once the cake is cooled and the ganache is ready, it’s time to decorate, slice, and enjoy!

A banana walnut cake with chocolate ganache.

Banankage (Banana Walnut Cake with Chocolate Ganache)

5 from 1 vote
A beautiful cake with delicious banana and walnut flavor, a light dash of cardamom, and rich chocolate ganache on top.
Servings 12 servings
Prep Time 30 minutes
Cook Time 35 minutes
Total Time 1 hour 5 minutes
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IMPORTANT NOTE:

We always bake using a digital scale and the metric system (grams and milliliters). We can’t promise that our cup measurements will be as accurate! Additionally, we bake and develop our recipes in a convection (fan) oven.

Ingredients
 
 

CAKE BATTER

  • 3 bananas *you can use frozen bananas for this; the weighed amount will vary depending on the size of the bananas, but anywhere from 250g – 375g of banana should be fine!
  • 120 ml vegetable oil
  • 120 ml milk *room temperature
  • 3 large eggs *room temperature
  • 1.5 tsp vanilla extract
  • 100 grams brown sugar
  • 100 grams granulated sugar
  • 250 grams flour
  • 2 tsp baking powder
  • 1 tsp baking soda
  • 1/2 tsp cardamom
  • 1/2 tsp salt
  • 100 grams walnut pieces *optional, but highly recommended!

CHOCOLATE GANACHE

  • 230 grams dark chocolate chips/dark chocolate bar, chopped *yes, this is a lot of chocolate – we like the top layer of ganache to be really thick! Feel free to make a thinner layer depending on how much chocolate you would like, just keep the ratio of chocolate to cream about 1:1
  • 240 ml heavy cream
  • Pinch of salt

TOPPING

  • Extra chopped walnuts for decoration *optional
  • Flaky salt *optional

Instructions
 

  • Preheat oven to 350F (175C). Prepare a 10" springform pan by greasing the sides and adding parchment paper to the bottom of the pan. You can use a different cake tin (such as a square or a rectangular one), keeping in mind the amount of batter may not fit in smaller tins!
    Lining a pan with parchment paper.
  • Mash the bananas in a medium sized mixing bowl well; they can be a little lumpy, but there shouldn't be any large chunks.
    Mashing bananas in a bowl.
  • Add in the other wet ingredients to the bananas – vegetable oil, milk, eggs, vanilla extract, brown sugar, and granulated sugar.
    Adding wet ingredients to a bowl.
  • Whisk well to combine everything.
    Mixing together wet ingredients in a bowl.
  • In a separate larger bowl, mix together the dry ingredients – flour, baking powder, baking soda, cardamom, and salt. Whisk together so there are no lumps in the mixture.
    Whisking together dry ingredients.
  • Pour the wet ingredients into the dry ingredients, whisking together until everything is just combined.
    Whisking the batter together.
  • Add in walnut pieces (if they are quite large, you can chop them up smaller before adding them in!) and fold into the mixture using a rubber spatula.
    Adding in walnut pieces to the cake batter.
  • Transfer the mixture to your baking tin, scraping the sides of the bowl to make sure you get all the batter into the tin.
    Adding cake batter to a pan.
  • Put the cake in the oven and bake for 30-40 minutes, until the top is evenly browned and a knife or a cake tester in the middle of the cake comes out clean. If it's still wobbly or the knife has batter on it, give it more time in 5 minute increments.
    Cake after baking.
  • Let cool for around 5 minutes in the pan; then remove from the springform and place to cool completely on a wire rack.
  • While the cake is cooling, prepare the chocolate ganache topping. Start by measuring out your heavy cream in a heat proof bowl and heating it either in the microwave or using a double boiler on the stove.
  • Once the cream is steaming, remove from heat/microwave. Add in chocolate chips/chopped chocolate and let sit for 5 minutes.
    Making a chocolate ganache.
  • After 5 minutes, stir the mixture. It should be smooth and shiny. If there are still unmelted chocolate pieces, pop it in the microwave or heat over the double boiler until those pieces have melted.
    Chocolate ganache in a bowl.
  • Set the ganache aside to cool; you can also pop it in the fridge to cool down faster, just make sure you pay attention to how set it is, as you want it to still be spreadable onto the cake!
    Chocolate ganache after it has set.
  • After the cake has cooled down, spread the ganache over the top of the cake. We like to make a swirl pattern on the top.
    Decorating a cake with chocolate ganache.
  • Add extra chopped walnuts and some flaky salt, if you want, over the top. Slice and enjoy! We do keep this in the fridge because of the chocolate ganache, but if you don't add that to the top, you can keep the cake at room temperature.
    Decorating a cake with walnut pieces.
Course: Dessert
Cuisine: Other
Keyword: banana, cardamom, chocolate, ganache, walnuts
Difficulty: Beginner
5 from 1 vote (1 rating without comment)

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