Slow Cooker Chicken and Red Lentil Soup with Fennel

5 from 6 votes

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This thick and satisfying soup has tailgating or sidelines or post-game meal written all over it.

Red Lentil, Fennel and Chicken Slow Cooker Soup / Sarah Crowder / Katie Workman / themom100.com

This is the Story of The Day I Became a Tailgating Football Mom. Or something like that.

So, I live in New York City. If you’ve never been, it looks much as it does on TV. Lots of people, tall buildings, subways, commerce, noise. I love it and smile acceptingly when people often comment, “Oh, I love to visit, but I wouldn’t want to live there.” That’s cool. More overpriced gyros for the rest of us.

And both my kids played middle and high school football. One of the first things any non-New Yorker will say upon hearing that is, “WHERE? Where do they play? That’s so weird.”

These are reasonable questions. The answer is that they played some games at competing schools’ fields when those schools were in the surrounding boroughs or suburbs. And, their practices and “home games” took place on Randall’s Island, a strange little island across the East River that has a large number of sports fields dispersed amongst a few structures such as a Golf Center, a Sewage Treatment Plant, and a Mental Hospital.

Red Lentil, Fennel and Chicken Slow Cooker Soup in a cream bowl with handles.

Slow Cooker Chicken and Lentil Soup with Fennel: This thick and satisfying lentil soup has tailgating or sidelines or post-game meal written all over it.

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Only when I put things like this down on paper do I realize how odd it sounds. And how I am actively confirming non-New Yorkers’ perceptions that we live a very singular existence here in our fair city.

Anyway, the first time I made this soup, I ended up bringing it to Jack’s football game right in the slow cooker. Gary (who is now a 30-year veteran New Yorker) thought this was just plain odd (even though he grew up in Worcester, Massachusetts, where I gather things like this happen all the time).

On the car ride there, Gary kept asking where I would put the soup and how I would serve it, as though I was planning to bring crème brûlée and a blowtorch to the field. The boys had already left for the game; had they been home, they would absolutely have lent their voices to the “this-is-so-weird” protest.

We arrived at Randall’s Island and luckily got the really, really good field, the one upwind of the Sewage Plant, and with actual bleachers. Someone had actually brought a table for people to drop off snacks on (thus solving the problem of where I would put it), and I dropped off the soup with a ladle and some plastic bowls and spoons (thus solving the problem of how I would serve it).

White bowl with Red Lentil, Fennel and Chicken Soup.

It was the final game, the Super Bowl, of their league against their arch-rival school, and tensions were high. I will spare you the blow by blow, and jump right to the part where my kids’ school won, completing their second undefeated season in the history of the high school. (It’s like I just discovered the italics key for the first time, and I am born again as a writer.)

Oh, and the soup? Gone. And adorable 16-year-old girls came up to me all day and said, “Did you make the soup — it was so good!” which I may or may not need to tell you makes a middle-aged woman feel terrific.

God, that was a long story. Anyway, this soup is pretty good: thick, fragrant with cumin and coriander, and kind of dal-like in personality. I would definitely add the fresh parsley at the end, though the football game is purely optional.

Slow Cooker Chicken and Red Lentil Soup with Fennel Ingredients

  • Onion – Any kind of onion will work here.
  • Garlic – Mince the garlic finely.
  • Fennel – Remove the hard core before chopping. If you want, you can reserve the fronds (the leafy, green parts that look like dill) and stir them in with the parsley at the end.
  • Carrots – Add sweetness and contribute to the gorgeous orange color of this soup.
  • Dried red lentils – The slow cooker is a great way to make red lentil soup. They will soften and break down and start to thicken the soup.
  • Spices – I add ground cumin and coriander to this soup as a sort of callback to red lentil dal.
  • Chicken breasts – Use boneless, skinless chicken breasts to avoid having to prep the chicken at all before throwing it in.
  • Chicken broth – The amount of broth is key here to avoid having a soup that is too thick or too thin.
  • Canned crushed tomatoes – Add body to the soup. And so much flavor.
  • Salt & pepper – To taste.
  • Fresh parsley – Gets stirred in right at the end to preserve its fresh flavor and color.

How to Make Red Lentil, Fennel, and Chicken Slow Cooker Soup

  1. Combine: Add the onion, garlic, fennel, carrots, lentils, cumin, coriander, chicken, broth, and tomatoes to your slow cooker. Season to taste.
  2. Cook: Set the slow cooker to high and cook for 4 hours. Set it and forget it, pretty much!
  3. Serve: Once done cooking, taste the soup and adjust the seasonings if you want to. Stir in fresh parsley and serve.

FAQs

Do I need to rinse lentils before making soup?

Yes, you should rinse lentils before cooking them. Like any dried product (like beans or rice), dried lentils (of all colors) can sometimes contain small rocks or sand. Rinsing ensures that you don’t get sand in your soup.

Why is my lentil soup so thick?

Lentils contain starches that bloom and thicken when cooked in liquid. They contain more starch than other pulses like beans or peas, so you may be surprised at just how thick your lentil soup gets. Also, red lentils get very soft and also break down, thickening the coup into almost a porridge-like consistency. If it’s too thick for your taste, just add more broth to thin it out. The longer they cook, the more the lentils will thicken the soup.

Storage and Leftovers

  • This soup will keep in the fridge for up to 5 days, well covered. Reheat in a pot over medium-low heat. It will thicken in the fridge, so you will likely have to add more broth or water to thin it out.
  • You can also freeze this soup. Defrost in the fridge overnight. It will also need thinning out when reheating.

What to Serve With Chicken and Red Lentil Soup

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5 from 6 votes

Slow Cooker Red Lentil, Fennel, and Chicken Soup

This thick and satisfying soup has tailgating or sidelines or post-game meal written all over it.
Prep Time: 15 minutes
Cook Time: 4 hours
Total Time: 4 hours 15 minutes
Servings: 12 People

Equipment

Ingredients 

  • 2 onions (chopped)
  • 3 cloves garlic (minced)
  • 1 large fennel bulb (cored and chopped; about 1 1/2 cups)
  • 2 large carrots (peeled and chopped; about 1 cup)
  • ½ pound dried red lentils
  • 1 teaspoon ground cumin
  • 1 teaspoon ground coriander
  • 2 pounds boneless skinless chicken breasts (diced small)
  • 5 cups less-sodium chicken broth
  • 1 28-ounce can crushed tomatoes
  • Kosher salt and freshly ground pepper (to taste)
  • ½ cup roughly chopped fresh parsley (plus more to serve if desired)

Instructions 

  • In a large (5-quart or more) slow cooker, combine the onion, garlic, fennel, carrots, lentils, cumin, coriander, chicken, broth, and tomatoes. Season with salt and pepper.
  • Cook on high for 4 hours. Taste and adjust the seasonings as needed. Stir in the parsley and serve. Sprinkle servings with additional parsley if desired.

Notes

  • This soup will keep in the fridge for up to 5 days, well covered. Reheat in a pot over medium-low heat. It will thicken in the fridge, so you will likely have to add more broth or water to thin it out.
  • You can also freeze this soup. Defrost in the fridge overnight. It will also need thinning out when reheating.

Nutrition

Calories: 199kcal, Carbohydrates: 21g, Protein: 23g, Fat: 3g, Saturated Fat: 1g, Cholesterol: 48mg, Sodium: 583mg, Potassium: 842mg, Fiber: 8g, Sugar: 5g, Vitamin A: 2107IU, Vitamin C: 16mg, Calcium: 65mg, Iron: 3mg
Like this recipe? Rate and comment below!

About Katie Workman

Katie Workman is a cook, a writer, a mother of two, an activist in hunger issues, and an enthusiastic advocate for family meals, which is the inspiration behind her two beloved cookbooks, Dinner Solved! and The Mom 100 Cookbook.

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28 Comments

  1. Ok, so I discovered your site looking for pork shoulder ideas, and ended up clicking on this recipe because I impulse bought (long story) some red lentils and have never, ever cooked them and figured, “Hey, two recipes in one Google search, that’s a bargain!” But what brought me to comment was your mention of the sports fields…I live in Iowa, the opposite of NYC, but my kids’ soccer fields were *also* downwind of the sewage treatment plant, so I know all too well the victory of scoring the poop-free field! Our youngest son wrapped up his last season of soccer a year ago, and my husband and I got a little emotional that after 7 years, both spring and fall, our Saturdays would no longer be game days. I mentioned that at least we didn’t have to sit by the poop plant on purpose anymore, and he replied, “Yeah, but…I have good associations with the poop. Poop means soccer.” To each their own. Also, I agree that as a middle aged mom, getting any sort of compliment from a high-schooler (especially one I didn’t birth) is a huge win.

    Bad-smell story aside, my husband is vegetarian, so I’m planning to give this a try using “not chicken” broth/bullion and maybe tossing some baked tofu in on serving. Orrrrrr, I can just make it with chicken, and then it’s more for me and the kids ;) Thank you for sharing it, look forward to trying it out!

    1. thanks for the mom-to-mom love! and if you make it with tofu, let me know how it turns out! here’s to more poop free sporting events.

  2. I don’t have a slow cooker. What if I just stick it on stove top, set the timer for an hour and add water if needed?

  3. So glad to hear! What a great modification – it’s a very flexible recipe. Love the cilantro addition.

  4. Hey Katie! This soup looks amazing! Three of my favorite things- red lentils, fennel and coriander. I gave my slow cooker to my sister but this soup makes me want to get it back. (I have a key to her house…)