Photo of Slow Cooker Lentil Soup by WW

Slow Cooker Lentil Soup

Total Time
8 hr 12 min
12 min
8 hr
Maximum comfort and minimal effort make this the ideal soup for any cold weather day. Only 12 minutes of preparation and the slow cooker does the heavy lifting. Lean Canadian bacon infuses a smoky layer into the broth and adds depth to the broth. A quick puree of a cup of lentils adds body. With a hearty eight servings, this dish tackles a crowd of hungry sledders or makes a sock pile of lunches for the week. For additional flavour, top each serving with a splash of white wine vinegar or sub in 1 tablespoons fresh thyme for the dried thyme to kick up the fresh herb flavour.


Uncooked carrot(s)

2 medium, peeled, cut into large chunks

Uncooked celery

2 stalk(s), medium, cut into large chunks, reserve celery leaves for garnish, if desired

Uncooked onion(s)

1 medium, cut into large chunks

Garlic clove(s)

2 large clove(s), minced

Dry lentils

2 cup(s), picked over

Bay leaf

3 leaf/leaves

Dried thyme

½ tsp(s), crushed

Table salt

½ tsp(s), or to taste

Black pepper

¼ tsp(s), or to taste

Canned chicken broth

8 cup(s)

Uncooked Canadian bacon

4 oz, diced (4 or 5 slices)


  1. Place all the ingredients in a 4- to 5-quart slow cooker in the following order: carrots, celery, onion, garlic, lentils, bay leaves, thyme, salt, pepper, and broth. Cover the slow cooker; cook on the low setting for 6 hours. Uncover, stir in the bacon and heat for 30 minutes more; remove bay leaves, and garnish with celery leaves, if using, before serving.
  2. Serving size: about 1 1/2 cups.


To thicken the soup, remove 1 cup of cooked lentils and puree them in a food processor; stir the pureed lentils back into the soup. For a lighter flavour, replace 4 cups of chicken broth with 4 cups of water. To make this vegetarian, substitute a cup of sliced shiitake mushroom caps for the Canadian bacon and use vegetable broth.