The Banana Nut Coffee Cake recipe involves making a moist and flavorful coffee cake with ripe bananas, nuts, and a delicious streusel topping. The streusel is made by combining melted butter, brown sugar, cinnamon, flour, and salt to create a crumbly texture. The cake batter includes mashed bananas, sugar, cinnamon, salt, sour cream, oil, eggs, vanilla extract, flour, and baking soda, with nuts folded in. The batter is layered in a loaf pan with the streusel mixture and optional sliced bananas, then baked until golden and cooked through. Once cooled, a simple glaze made from powdered sugar, milk, and vanilla is drizzled over the cake before serving.
In a small bowl, combine all streusel topping ingredients using a fork until crumbly.
In the bowl of a mixer, blend together ripe bananas, sugar, cinnamon, salt, sour cream, and oil for one minute.
With the mixer on low, add eggs and vanilla, mixing for about 20 seconds until incorporated. Gradually add flour and baking soda, mixing on medium speed for one minute. Fold in nuts.
Line a 9×5 inch loaf pan with parchment paper and coat with non-stick cooking spray. Pour half of the cake batter into the pan, followed by half of the streusel topping. Add the remaining batter and top with sliced banana, if using, and remaining streusel topping.
Place the loaf pan on a baking sheet to catch any drips and bake for 55-65 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, transfer the cake to a wire rack and let it cool for 30 minutes before removing from the pan to cool completely.
In a small bowl, whisk together powdered sugar, milk, and vanilla extract to make the glaze. Drizzle over the cooled cake before serving. Enjoy!