Soft Banana Cookies

Name: Soft Banana Cookies
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: American
Ingredients: 1 cup mashed bananas, about two large bananas ((9 ounces: 255 grams of banana puree)); 2 ½ cups all-purpose flour ((10 ⅛ ounces; 287 grams)); 1 teaspoon baking powder; 1 teaspoon baking soda; 1 teaspoon ground cinnamon; ½ teaspoon salt; 1 ¼ cup dark brown sugar ((9 ounces; 255 grams)); ½ cup butter, softened ((4 ounces; 113 grams)); 1 large egg ((2 ounces; 56 grams)); 1 teaspoon vanilla extract; 1 cup chocolate chips, optional ((6 ounces; 170 grams)); 1 cup pecans or walnuts, chopped ((4 ounces; 113 grams))