Spiced Chocolate Chip Banana Cookie Bars

Name: Spiced Chocolate Chip Banana Cookie Bars
Ingredients: 1.5 cups white sugar; 1 cup sour cream; 0.75 cup butter, melted; 2 eggs; 1.5 cups mashed banana; 2 teaspoons vanilla extract; 0.5 teaspoon rum flavoring; 2.5 cups all-purpose flour; 1 teaspoon salt; 1 teaspoon baking soda; 1 teaspoon ground cinnamon; 1 teaspoon ground ginger; 0.5 teaspoon ground nutmeg; 1 cup chocolate chips