Slow Cooker Turkey Soup with Kale and Sweet Potatoes

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This Slow Cooker Turkey Soup with Kale and Sweet Potatoes is a perfect idea for using leftover turkey, but it can also be made with rotisserie chicken if you prefer. This soup is pretty low in net carbs, but see tips in the recipe for making this an even lower-carb soup.

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Slow Cooker Turkey Soup with Kale and Sweet Potatoes with soup in bowl on yellow plate

Slow Cooker Turkey Soup with Kale and Sweet Potatoes was inspired by leftover turkey breast that I cooked in the slow cooker, but you can certainly use leftover rotisserie chicken to make this delicious soup if you don’t have any turkey. The day I brainstormed this recipe I also had sweet potatoes and kale that I needed to use, two of my favorite soup ingredients.

I loved how this veggie-loaded soup turned out, and sweet potatoes and kale are both healthy foods so this is a soup that’s loaded with nutrition. I was home the day I made this slow cooker turkey soup, so I cooked my soup on high, but you can cook the broth and veggies all day on low, then turn your slow cooker to high and add the turkey and kale when you get home from work.

And did you know that any soup that’s made with leftover turkey can also be made with rotisserie chicken? Either way you make it, if you like these ingredients this will be a tasty soup!

What ingredients do you need for this recipe?

onion
celery
homemade turkey stock or chicken broth (see notes)
Turkey Soup Base (affiliate link) or chicken base, optional, but recommended especially if you use canned broth)
Poultry Seasoning (affiliate link)
Dried Thyme (affiliate link)
fresh ground black pepper to taste
sweet potatoes
chopped cooked turkey
kale
balsamic vinegar

What if you don’t have homemade turkey stock?

I’m a huge fan of homemade turkey stock, and I’d always use that in any recipe for turkey soup if I had some in the freezer. But if you don’t have turkey stock, you can still make a tasty soup using canned chicken broth (affiliate link) and adding a little Penzeys Turkey Soup Base (affiliate link) or another type of turkey soup base of your choice.

How can you make this Slow Cooker Turkey Soup lower in carbs?

This recipe as written has 12.1 net carbs, which is pretty low for a soup with sweet potatoes. But if you want to make it even lower in carbs, just replace the sweet potatoes with one cup frozen cauliflower rice which will make a soup with only 7 net carbs in a serving!

Can you use other types of greens in this soup?

There’s no doubt that I love Kale in soup! But if you’re not a fan you could use Swiss Chard, Collards, or Spinach in the slow cooker turkey soup. Spinach is softer and will cook more quickly than the other greens.

Want more tasty slow cooker or Instant Pot Soups with Turkey?

This recipe was featured in Slow Cooker or Instant Pot Turkey Soup Recipes on my Slow Cooker or Pressure Cooker site!

Slow Cooker Turkey Soup with Kale and Sweet Potatoes collage of recipe steps

How to Make Slow Cooker Turkey Soup with Kale and Sweet Potatoes:

(Scroll down for complete printable recipe with nutritional information.)

Chop up a large onion and about a cup of chopped celery and add to the slow cooker.
Add the Poultry Seasoning (affiliate link), Dried Thyme (affiliate link), 10 cups turkey or chicken stock (or about 6 cans of broth), and fresh ground black pepper. If your stock or broth isn’t that flavorful I’d add a couple of teaspoons of turkey base (affiliate link) or chicken base (affiliate link).
Let this start to cook while you cut up the sweet potatoes. I cut up two medium sweet potatoes to make about 3 cups small sweet potato cubes, but a little more or less won’t hurt.
Add sweet potatoes to the soup mixture in the slow cooker and cook 4 hours on high (or 8-9 hours on low if you’re not going to be home.)
I only had about 2 cups of chopped leftover turkey, but you could use a little more if you have plenty.
Cut away the ribs of the kale and chop the leaves into small pieces to make 4 cups (packed) of kale.
Add the turkey and kale to the slow cooker, turn to high if you had been cooking on low, and cook 1-2 hours more.
Here’s how mine looked after the kale and turkey had cooked in the soup for nearly two hours.
Stir in the balsamic vinegar and serve hot. (I’d start with the smaller amount of balsamic vinegar; then taste to see if you want a little more.)

Slow Cooker Turkey Soup with Kale and Sweet Potatoes shown in bowl with spoon

More Tasty Turkey Soup Recipes from Kalyn:

Want More Slow Cooker and Pressure Cooker Soups?

If you love making soup in the slow cooker or the Instant Pot, check out the index page for Soups or Stews on my Slow Cooker or Pressure Cooker site for more tasty ideas!

Ingredients

1 large onion, chopped fairly small
1 cup chopped celery
10 cups homemade turkey stock (see notes)
1 T teaspoons turkey soup base or chicken base (optional, but recommended especially if you use canned broth)
1 tsp. poultry seasoning
1 tsp. dried thyme
fresh ground black pepper to taste
2 medium sweet potatoes, peeled and cut into 3/4 inch cubes (see notes)
2 cups chopped cooked turkey (see notes)
4 cups finely chopped kale (packed into measuring cup)
2-3 T balsamic vinegar

Instructions

Peel and chop the onion and chop enough celery to make one cup chopped celery; add onion and celery to the slow cooker. Add the poultry seasoning, dried thyme, 10 cups turkey or chicken stock (or broth), and fresh ground black pepper, turn on the slow cooker and let it start to cook while you chop the sweet potatoes.
Peel sweet potatoes and cut into 3/4 inch cubes. Add to the slow cooker with the chicken (affiliate link) or turkey (affiliate link) soup base (if using) and cook for 4 hours on high or 8 hours on low.
Chop up enough turkey or chicken to make 2-3 cups bite-sized pieces.
Cut away the ribs from the kale leaves and finely chop enough kale to make 4 cups packed kale.
Add the turkey and kale to the slow cooker, and turn to high if you’ve been cooking on low.
Cook for 1-2 hours more on high, or until the kale is done to your liking.
Add balsamic vinegar and stir into the soup. (I would start with 2 tablespoons and taste to see if you want to add more.)
Serve hot. This would probably freeze okay, but the sweet potatoes will be starting to fall apart after this long cooking time and freezing will make them even softer.

Notes

If you don’t have homemade turkey or chicken stock you can use about 6 cans chicken broth, preferably with a little Penzeys Turkey Soup Base (or other turkey base.)

Nutrition Information:

Yield:

Serving Size:

1

Amount Per Serving:
Calories: 263Saturated Fat: .9gTrans Fat: 0gUnsaturated Fat: 1.9gCholesterol: 43mgSodium: 1240mgCarbohydrates: 15gFiber: 2.9gSugar: 5.8gProtein: 14g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

Slow Cooker Turkey Soup with Kale and Sweet Potatoes in bowl, square image

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
This Slow Cooker Turkey Soup with Kale and Sweet Potatoes is relatively low in net carbs, but replace the sweet potatoes with about a cup of frozen cauliflower rice for a soup that’s even lower in carbs. Using sweet potatoes would make this soup limited to phase 2 or 3 for the original South Beach Diet.

Find More Recipes Like This One:
Use Soup Recipes for more tasty ideas for soup! Use the Diet Type Index to find recipes suitable for a specific eating plan. You might also like to follow Kalyn’s Kitchen on Pinterest, on Facebook, on Instagram, on TikTok, or on YouTube to see all the good recipes I’m sharing there.

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