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full image of Caramel Banana Layer Cake

Caramel Banana Layer Cake

  • Author: Life, Love and Sugar
  • Prep Time: 1 hour 30 minutes
  • Cook Time: 40 minutes
  • Total Time: 2 hours 10 minutes
  • Yield: 12-14 Slices
  • Category: Cake
  • Method: Oven
  • Cuisine: American


Moist banana cake layers covered in caramel sauce & frosted with more caramel frosting! This awesome Caramel Banana Layer cake is a must try banana dessert.



  • 1 1/2 cups (310g) sugar
  • 3/4 cup (168g) unsalted butter, room temperature
  • 1/2 tsp vanilla extract
  • 3/4 cup (173g) sour cream
  • 3 tbsp (45ml) vegetable oil
  • 3 large eggs
  • 1 large egg white
  • 2 1/2 cups (325g) all purpose flour
  • 2 tsp baking powder
  • 1/2 tsp baking soda
  • 1/2 tsp salt
  • 1 cup (240ml) mashed bananas (23 medium sized bananas)



  • 1 1/2 cups (336g) salted butter, room temperature
  • 1 1/4 cups (237g) shortening
  • 10 1/2 cups (1208g) powdered sugar
  • 2 tsp vanilla extract
  • 7 tbsp caramel sauce (above), room temperature
  • 3 tbsp water



1. Grease three 8 inch round cake pans and preheat oven to 350°F (176°C).
2. Beat the butter and sugar until light and fluffy, about 3-4 minutes. Do not skimp on this step. Cream the butter for the full 3-4 minutes.
3. Add vanilla, sour cream and vegetable oil and mix until well combined.
4. Add eggs and egg white in two batches, mixing until well combined.
5. Combine dry ingredients in another bowl. Add half of the dry ingredients to the batter and mix until well combined.
6. Add the mashed bananas and mix until well combined.
7. Add remaining dry ingredients and mix until well combined.
8. Divid batter evenly between the cake pans and bake 24-26 minutes or until a toothpick inserted comes out with a few crumbs.
9. Remove cakes from oven and allow to cool for 3-4 minutes, then remove to cooling rack to cool completely.


1. Beat the butter and shortening together until smooth.
2. Slowly add about half of the powdered sugar, mixing until smooth.
3. Add the vanilla extract and the caramel sauce and mix until smooth.
4. Slowly add the remaining powdered sugar and mix until smooth.
5. Add the water (or additional caramel sauce), as needed, and mix until smooth.


1. Use a large serrated knife to remove the domes from the tops of the cake layers so that they are flat.
2. Place the first layer of cake on your serving plate or on a cardboard cake circle.
3. Add 5-6 tablespoons of caramel sauce to the top of the cake layer and spread evenly over the cake.
4. Add about 1 cup of frosting on top of the caramel sauce and spread into an even layer.
5. Add the second layer of cake on top of the frosting.
6. Add another 5-6 tablespoons of caramel sauce to the top of the cake layer and spread evenly over the cake. Add another cup of frosting on top of the caramel sauce and spread into an even layer.
7. Top the cake with the remaining layer of cake.
8. Frost the outside of the cake with the remaining frosting. For help getting a smooth finish, refer to my tutorial on how to frost a smooth cake with buttercream.


1. Place banana chips around the bottom edge of the cake.
2. Use the remaining caramel sauce to drizzle around the edges of the cake.
3. Use the remaining frosting to pipe swirls of frosting around the top edge of the cake. I used Ateco tip 844.
4. Place a few banana chips around the top of the cake.
5. Because of the caramel sauce, you may want to refrigerate this cake. I recommend storing it in an air-tight container. Cake is best served at room temperature. Cake is best for 2-3 days.

* I made a full batch of the caramel sauce linked to above for this recipe and had just enough to use it in the frosting, on the cake layers and to drizzle around the cake. Feel free to use another caramel sauce, if you prefer. I’d recommend something that is soft enough at room temperature that you can scoop it, but firm enough that it would stay in place on a spoon.


When adding the caramel sauce to the frosting, it’s best if the caramel is at room temperature so that you can accurately see what the consistency of the frosting is as you’re making it.


  • Serving Size: 1 Slice
  • Calories: 1099
  • Sugar: 113.6 g
  • Sodium: 367.8 mg
  • Fat: 61.4 g
  • Carbohydrates: 136.8 g
  • Protein: 5.7 g
  • Cholesterol: 132.2 mg