Step 1: Preheat Oven
Preheat oven to 350°F (175°C). Grease and flour two 8-inch round cake pans.
Step 2: Prepare Dry Ingredients
Whisk together flour, baking soda, and salt in a medium bowl. Set aside.
Step 3: Mix Wet Ingredients
In a large bowl, cream butter and sugar until light and fluffy. Beat in eggs one at a time, then stir in vanilla extract.
Step 4: Add Bananas & Sour Cream
Mix in sour cream and mashed bananas until smooth.
Step 5: Combine Wet & Dry
Gradually fold the dry ingredients into the wet mixture until just combined. Gently fold in walnuts and white chocolate chips.
Step 6: Bake
Divide batter evenly between pans. Bake 30–35 minutes, or until a toothpick inserted in the center comes out clean.
Step 7: Cool
Let cakes cool in pans for 10 minutes, then transfer to a wire rack to cool completely.
Step 8: Assemble
Spread half of the custard over one cake layer. Top with the second layer and cover with remaining custard.
Step 9: Garnish & Serve
Decorate with banana slices and walnuts. Serve immediately, or refrigerate until ready.
✨ Creamy, nutty, and packed with banana flavor, this cake is a true showstopper for any occasion.
