Chai Banana Bread

Name: Chai Banana Bread
Ingredients: 1 1/2 cups all-purpose flour; 1/3 cup walnuts, chopped; 1 teaspoon baking soda; 1 1/2 teaspoons ground cinnamon; 1 1/2 teaspoons ground ginger; 1/4 teaspoon ground cardamom; 1/4 teaspoon ground cloves; 1/4 teaspoon ground allspice; 1/4 teaspoon ground pepper; 1/2 teaspoon salt; 1/3 cup unsalted butter, melted; 1/2 cup light brown sugar; 1/4 cup white granulated sugar; 3 ripe bananas, smashed; 1 large egg; 1 teaspoon pure vanilla extract; 1/2 cup unsalted butter, room temperature; 4 ounces cream cheese, room temperature; 2 cups powdered sugar; 1 teaspoon vanilla; Pinch of salt