Great-Grandmother’s 100-Year-Old Banana Cake
This banana cake recipe has been in my family for over a century, passed down from my great-grandmother. It’s tender, moist, and full of banana flavor, finished with a creamy frosting that makes it irresistible.
Baking Notes
- Shortening: Crisco has changed its formula to remove trans fats, which affects how it performs in frosting. For the best results, use high-ratio shortening instead.
- Cake Flour: You can substitute all-purpose flour, but cake flour is lighter, absorbs liquid differently, and helps create a moist, tender crumb in high-sugar cakes.
Ingredients
For the Cake:
- 1 ¼ cups sugar
- 1 cup sour cream
- 2 large eggs
- 4 tablespoons salted butter, melted
- 4 ripe bananas, mashed
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 1 cup chopped walnuts (optional)
For the Frosting:
- 4 tablespoons salted butter, softened
- ½ cup heavy cream
- 1 teaspoon vanilla extract
- 2 ½ cups confectioner’s sugar (powdered sugar)
Instructions
Make the Cake:
- Preheat oven to 375°F (190°C). Grease a 9×13-inch baking dish with nonstick spray.
- In a medium bowl, cream together sugar, sour cream, eggs, and melted butter until smooth.
- Mix in mashed bananas and vanilla extract.
- Stir in flour and baking soda until combined. Fold in walnuts if using.
- Pour batter into prepared baking dish and bake for 25–35 minutes, or until a toothpick inserted in the center comes out clean.
- Cool completely before frosting.
Make the Frosting:
- In a mixing bowl, beat butter and confectioner’s sugar together until creamy.
- Gradually add heavy cream and beat until smooth.
- Stir in vanilla extract.
- Spread frosting evenly over cooled cake. Slice and serve.
Tips & Variations
- Moisture Boost: Add ½ cup applesauce for extra moistness.
- Nut-Free: Skip walnuts or substitute with chocolate chips.
- Layer Cake Option: Bake in two 9-inch round pans and stack with frosting in between.
- Storage: Keep covered at room temperature for up to 3 days or refrigerate for 5 days.