Step 1

Heat a medium skillet over high heat. Split jalapeños in half lengthwise, remove ribs and seeds, and place skin-side down in the pan. Carefully cover the pan with foil and cook until the skins are blackened, 7 to 10 minutes. Let cool, then dice.

Step 2

Meanwhile, heat oil in a large pot over medium-high heat. Add onion and carrot and cook, stirring often, until starting to brown, 6 to 8 minutes. Reduce heat to medium and continue cooking, stirring often, until soft, 3 to 5 minutes more. Add garlic and the diced jalapeños and cook, stirring, for 1 minute more.

Step 3

Stir in broth, scraping up any browned bits. Cover and bring to a boil over high heat. Add beans, tomatoes, molasses, lime zest and juice, cumin, paprika, cayenne, bay leaves, salt and pepper. Cover and return to a boil. Reduce heat to maintain a gentle simmer and cook, uncovered, for 30 minutes.

Step 4

Remove bay leaves. Puree 4 cups of the soup in a blender (use caution when pureeing hot liquids), then stir it back into the pot. Stir in kale, cover, and simmer until tender, about 5 minutes. Serve garnished with scallions and tomatoes, if desired.