Preheat your oven to 350°F (175°C) and grease a 9x5-inch loaf pan.

In a medium bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking soda, and a pinch of salt.

In a large bowl, beat 1/2 cup of softened unsalted butter and 3/4 cup of granulated sugar until pale and fluffy.

Add 3 large eggs one at a time, mixing well after each addition; stir in 1 teaspoon of vanilla extract, 4 mashed bananas, and 1/4 cup of sour cream.

Gradually add the dry ingredients to the wet mixture, folding gently until just combined.

In a separate bowl, beat 8 ounces of softened cream cheese with 1/4 cup of granulated sugar until smooth.

Pour half of the banana batter into the loaf pan, layer the cream cheese mixture on top, then add the remaining banana batter.

Bake for 55-65 minutes until the toothpick comes out clean from the bread portion.

Let the loaf cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.