Luscious Vanilla Banana Walnut Cake

Featured in Sweet Endings and Treats.

This luscious vanilla banana walnut cake combines classic flavors into an impressive layer cake that's surprisingly easy to make. The cake layers are incredibly moist thanks to ripe bananas and sour cream, while chopped walnuts add a delightful crunch throughout. A generous filling of smooth vanilla custard between the layers adds extra richness, and the whole cake is topped with fresh banana slices and more walnuts for both flavor and visual appeal. The recipe uses simple ingredients and straightforward techniques, making it perfect for both special occasions and weekend baking projects when you want something a little extra special.
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Updated on Thu, 16 Jan 2025 15:01:26 GMT
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Luscious Vanilla Banana Walnut Cake Recipe | tasteofcook.com

The aroma of vanilla and ripe bananas baking together instantly transforms any kitchen into a cozy sanctuary. This Vanilla Banana Walnut Cake has been my go-to recipe for turning overripe bananas into something truly spectacular. After countless iterations in my kitchen, I've perfected this recipe to create a cake that's incredibly moist, perfectly sweet, and filled with layers of vanilla custard that make every slice feel special.

I first made this cake for my daughter's birthday, and it was such a hit that it's now requested at every family gathering. Even my banana-skeptic husband can't resist a slice!

Essential Ingredients and Selection Tips

  • Bananas: Choose very ripe bananas with dark spots on the peel - they're sweeter and more flavorful. I often freeze overripe bananas just for this cake.
  • Sour Cream: Full-fat sour cream creates an incredibly tender crumb. The slight tanginess balances the sweetness perfectly.
  • Vanilla Extract: Pure vanilla extract makes a noticeable difference. I splurge on Madagascar bourbon vanilla for special occasions.
  • Walnuts: Fresh walnuts are crucial - taste one before using to ensure they're not rancid. I store mine in the freezer to maintain freshness.
  • Butter: Use unsalted butter at room temperature. It should be soft enough to leave an indent when pressed but not melting.

Step-by-Step Baking Instructions

Preparation Phase (30 minutes):
Let all refrigerated ingredients reach room temperature. Toast walnuts at 350°F for 8-10 minutes until fragrant, stirring halfway. Grease pans thoroughly and line bottoms with parchment paper. Mash bananas until smooth but still slightly chunky for texture.
Making the Batter (25 minutes):
Cream butter until light and fluffy - this usually takes 3-4 minutes. Add sugar gradually while beating - the mixture should look almost white. Beat in eggs one at a time, scraping the bowl after each addition. Fold in mashed bananas and sour cream with gentle strokes. Add dry ingredients in three portions, mixing just until combined.
Baking Process (35-40 minutes):
Pour batter evenly between pans - use a scale for precision. Tap pans gently on counter to remove air bubbles. Place in middle rack and avoid opening oven door while baking. Test with wooden skewer - it should come out with just a few moist crumbs.
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I discovered the importance of banana ripeness when I made this cake for my sister's bridal shower. The perfectly speckled bananas created the most flavorful cake we'd ever tasted!

The Art of Cake Assembly

Learning to assemble this cake was a game-changer for me. After the layers have cooled completely, I place strips of parchment paper under the edges of the bottom layer. This keeps the serving plate clean while decorating. The vanilla custard should be cool but spreadable - I've found that chilling it for about an hour gives the perfect consistency.

Making It Your Own

Over the years, I've experimented with countless variations. During fall, I add a teaspoon of cinnamon and nutmeg. For special occasions, I've drizzled caramel sauce over the top, and during summer, I sometimes add fresh berries between the layers. Each variation brings its own charm to this versatile recipe.

Professional Tips for Perfect Results

  • Press a piece of plastic wrap directly onto the surface of the custard while it cools to prevent a skin from forming
  • To achieve the perfect crunch, toast extra walnuts for the topping
  • Use a serrated knife dipped in hot water between cuts for clean slices
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After years of baking this cake, I've learned that patience is key. There's something truly therapeutic about the process - from mashing the ripe bananas to carefully layering the custard. Every time I make it, I'm reminded of all the special moments it's been part of, from birthday celebrations to quiet Sunday afternoons with family.

Whether you're an experienced baker or just starting out, this cake is a testament to how simple ingredients can come together to create something extraordinary. The combination of moist banana cake, creamy vanilla custard, and toasted walnuts makes every bite a perfect balance of flavors and textures. It's become more than just a recipe in my household - it's a cherished tradition that brings people together.

I still remember the first time I made this cake - I was nervous about getting the layers even and the custard smooth. Now, it's like second nature, and watching others enjoy it brings me just as much joy as that first successful attempt. Remember, baking is about creating memories as much as it is about creating delicious treats.

Frequently Asked Questions

→ Why do the ingredients need to be room temperature?
Room temperature ingredients blend together more smoothly and evenly, creating a better cake texture.
→ Can I make this cake ahead of time?
Yes, bake the layers a day ahead, but add the custard filling and fresh banana topping just before serving.
→ How ripe should the bananas be?
Use very ripe bananas with brown spots - they're sweeter and more flavorful than yellow bananas.
→ Can I freeze this cake?
Freeze the unfilled cake layers for up to 3 months, but add custard and toppings fresh after thawing.
→ How should I store leftovers?
Store in the refrigerator for up to 3 days due to the custard filling and fresh banana topping.

Vanilla Banana Walnut Layer Cake

A rich double-layer banana cake loaded with walnuts, filled with vanilla custard, and topped with fresh banana slices for the perfect special occasion dessert.

Prep Time
30 Minutes
Cook Time
40 Minutes
Total Time
70 Minutes


Difficulty: Intermediate

Cuisine: American

Yield: 12 Servings

Dietary: Vegetarian

Ingredients

→ Cake Base

01 3 cups all-purpose flour
02 2 teaspoons baking soda
03 1/2 teaspoon salt
04 1 cup unsalted butter, softened
05 2 cups granulated sugar
06 4 large eggs
07 1/2 cup sour cream
08 2 teaspoons vanilla extract
09 6 ripe bananas, mashed
10 1 cup chopped walnuts

→ Filling and Topping

11 2 cups vanilla custard
12 2 bananas, sliced
13 1/2 cup walnuts

Instructions

Step 01

Preheat your oven to 350°F (175°C) and grease two 9-inch round cake pans.

Step 02

In a medium bowl, whisk together the flour, baking soda, and salt.

Step 03

In a large bowl, beat the softened butter and granulated sugar together until light and fluffy.

Step 04

Add the eggs one at a time, beating well after each addition.

Step 05

Mix in the sour cream and vanilla extract.

Step 06

Stir in the mashed bananas until fully incorporated.

Step 07

Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Step 08

Fold in the chopped walnuts.

Step 09

Divide the batter between the prepared pans and bake for 35-40 minutes, until a toothpick comes out clean.

Step 10

Cool cakes completely, then layer with vanilla custard and top with banana slices and walnuts.

Notes

  1. Use room temperature ingredients for better incorporation
  2. Choose ripe bananas with brown spots for best flavor
  3. Avoid overmixing the batter to prevent dense cake

Tools You'll Need

  • Two 9-inch round cake pans
  • Electric mixer
  • Mixing bowls
  • Whisk
  • Spatula

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Eggs
  • Dairy (butter, sour cream)
  • Tree nuts (walnuts)
  • Wheat (flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 450
  • Total Fat: 22 g
  • Total Carbohydrate: 65 g
  • Protein: 8 g