1. Preheat oven to 375 degrees. Brush a standard 9-by-5-inch loaf pan with butter and dust with flour, tapping out excess.

2. In a large bowl, whisk together flour, sugar, salt, baking powder, baking soda, cardamom, and cinnamon, 30 seconds. In another bowl, whisk together butter, bananas, eggs, buttermilk, and vanilla until smooth. Make a well in flour mixture and pour banana mixture into it. Stir together until mostly combined but some dry flour remains. Add chocolate chips and continue stirring just until evenly distributed throughout and no dry flour remains (do not overmix). Transfer to prepared pan.

3. Bake until a tester inserted in center comes out clean, 1 hour to 1 hour, 10 minutes. Let cool in pan 10 minutes, then transfer loaf to a wire rack and let cool completely. Bread can be stored at room temperature, wrapped in parchment-lined foil, up to 3 days.