Gather all your ingredients together and measure them out.

Preheat your oven to 350°F (175°C).

In a medium bowl, combine the flour, baking soda, and salt. Whisk until well blended.

In a large mixing bowl, cream the softened butter and sugar together until light and fluffy.

Add eggs one at a time, mixing well after each addition. Then add mashed bananas and vanilla extract, mixing until smooth.

Gradually add the dry mixture into the wet mixture, stirring gently until just combined.

Gently fold in the chopped walnuts until evenly distributed.

Pour the batter into a greased cake pan and smooth the top.

Bake for 30-35 minutes or until a toothpick inserted into the center comes out clean.

Let the cake cool in the pan for a few minutes, then transfer to a wire rack to cool completely.

Beat the heavy cream with powdered sugar until soft peaks form for a light topping.