If desired, peel the skin/casing off the sausage. Next, cut it into 1/2-inch rings. Optionally, you can brown the sausage a little in a skillet with oil or simply pop it in the soup as-is.
Dice the onion ad chop the carrots.
Preheat a large soup pot with a bit of oil. Caramelize the onions until golden brown. Next, add in the grated carrots.
Rinse the beans under cool water to remove the canning fluid. Add them into the pot. Next, pour in 3 quarts of hot water and stir in the broth base. Allow it to simmer for 20 minutes.
Chop the kale into small pieces. Add the sausage and kale to the soup. Let the soup simmer for 5 minutes and remove it from heat.