Preheat your oven to 350°F (175°C) and prepare a 9x13-inch baking dish.

Cream together ½ cup of softened butter and 1 cup of granulated sugar until light and fluffy, about 3-4 minutes.

Add 2 large eggs, ½ cup of sour cream, and 2 teaspoons of vanilla extract, and beat until well blended.

Whisk together 1 ½ cups of all-purpose flour, 1 teaspoon of baking soda, and ½ teaspoon of salt in a separate bowl. Gradually add to wet ingredients, mixing until just combined.

Gently fold in 2 cups of mashed bananas until evenly distributed.

Pour the batter into the prepared baking dish, spreading evenly.

Bake for 25-35 minutes, checking with a toothpick for doneness.

Let the cake cool completely in the pan on a wire rack.

Make the frosting by beating 8 oz of softened cream cheese and ½ cup of softened butter until creamy.

Gradually mix in 2 cups of powdered sugar and 1 tablespoon of vanilla extract. Add heavy cream for desired consistency.

Frost the cooled cake with the cream cheese frosting and garnish if desired.

Slice and serve with coffee or tea.