This crockpot chicken fajita soup is a fiesta in a bowl! Tender chicken, peppers, onions, seasoning, cream, and cheese blend together to make this tasty creamy chicken fajita soup! This soup just happens to be low carb and keto - so everyone in your family can enjoy!
Why You'll Love It
It's Tasty
This soup is so tasty and full of zesty flavors. You really can customize the spice in this by changing from mild, medium, or hot salsa. This is one of my family's favorite soup recipes! I hope you enjoy it!
The BEST Chicken Soup
I have been making this soup for years. It's such a simple recipe to make in your slow cooker. I've served it to family and friends and it's always been a huge hit. It's very easy to double so you can serve to a crowd as well.
It's Easy
Really there is not too much to do other than cut your veggies, the rest is just dumping certain ingredients in at the beginning, and others at the end.
Crockpot or Instant Pot Option
This chicken fajita soup can be made in your crockpot or InstantPot/pressure cooker. Instructions below! 🙂 If you love Instant Pot chicken soup, try this quick and easy version!
Ingredients for Making Slow Cooker Fajita Soup
Here are the ingredient's you'll need to make low-carb keto chicken fajita soup:
- Onion: use yellow or white onion
- Bell Peppers: any color can be used, I like to use different colors so it's pretty!
- Garlic
- Boneless Skinless Chicken Thighs: chicken breast may also be used.
- Fajita Seasoning: make your own seasoning mix, or use a packet. Taco seasoning may also be used.
- Chicken Broth: stock or chicken broth is fine.
- Chunky Salsa: use mild, medium, or hot - whichever you prefer.
- Shredded Cheddar Cheese
- Heavy Cream: half and half may also be used
- Sour Cream: use regular or reduced fat
- Salt and Pepper: to taste
- Optional thickener: ½ teaspoon xanthan gum mixed with ½ teaspoon of olive oil, or 1 tablespoon cornstarch dissolved in 2 tablespoons of cold water or broth.
Substitutions and Variations
- Substitute chicken breast for chicken thighs.
- Fire-roasted tomatoes or diced tomatoes with green chiles can be added in addition to or in place of soup.
- Add more vegetables. Zucchini and mushrooms are delicious. Just add in step one and cook along with the chicken.
- If you are not following a low carb or keto diet you can add drained and rinsed black beans, pinto beans, or a can of corn.
- Add heat with sliced jalapenos or use a hot salsa.
- Add a smoky taste by using a few drops of liquid smoke.
- Use a different kind of cheese to mix up the flavor.
How to Make Crockpot Chicken Fajita Soup
Here are the instructions for making this chicken fajita soup recipe in your crockpot! (Bonus: you can also make this in your Instant Pot - instructions are below.)
Add onion, bell peppers, garlic, chicken thighs, broth, and fajita seasoning. Cook on low for 4 to 6 hours until chicken is done.
Add salsa and cheddar cheese, stirring until melted.
Stir in room temperature heavy cream and sour cream.
Season to taste with salt and pepper. Serve and enjoy!
Instant Pot Instructions
- Add onion, bell peppers, garlic, chicken thighs, broth, and fajita seasoning to the Instant Pot.
- Secure lid and cook on High pressure for 4 minutes. Quick-release pressure after the cooking cycle is complete.
- Remove the lid from the pot once pressure is released. Add salsa and cheddar cheese, stirring until melted.
- Add room temperature heavy cream and then sour cream. (Tip: the dairy can be warmed slightly in a microwave).
- Season with salt and pepper to taste. Serve and enjoy!
How to Serve Chicken Fajita Crockpot Soup
- Slow cooker chicken fajita soup is really a meal-in-one but if you're wanting a little variety, here are a few ideas on to serve it:
- Adjust seasoning to taste. Garnish with fresh cilantro or green onions.
- If you are a low-carb keto follower, make (or buy) cheese crisps and dip in the soup.
- Non-low carb followers will enjoy corn chips, tortilla chips, or even corn bread.
- A fresh green salad goes really well with the soup. Make an easy taco salad dressing by mixing salsa, sour cream, and a pinch of salt and pepper.
- If you are serving this soup to a crowd you could make our Overnight Layered Salad Recipe
FAQ's
Yes! Instructions are above, but add all ingredients except the salsa, cheese, half and half, and soup. Cook on the High-pressure setting for 4 minutes. Allow pressure to release naturally. Remove the lid when pressure is released, and add remaining ingredients. Serve and enjoy!
If you'd like to lower the fat in this recipe, use half and half or a lower-fat milk and a lower-fat sour cream. You can also use chicken breast instead of chicken thighs, and use less cheese.
Yes, this chicken fajita soup recipe is keto with only 6 net carbs, 22.9 grams fat, and 31.6 grams of protein.
Add 1 to 2 tablespoons of avocado oil, add additional cheese, and top with avocado and sour cream.
An easy way to thicken soups when following a keto diet is to use xanthan gum. Use it sparingly, as a little goes a long way. Mix ½ teaspoon xanthan gum in a small bowl with a small amount of olive oil or avocado oil (½ to 1 teaspoon). Add the mixture to whatever you are trying to thicken.
Let the soup cool, then transfer it to an air-tight container. Store in the refrigerator for up to 4 days.
Yes, you can freeze this soup for up to 4 months. Be aware that when dairy is frozen it can separate and give it a slightly curdled look. This does not affect the taste. To remedy this, add a little cream and sour cream to the soup before re-heating.
Can I ask you a favor?
If you tried this recipe, let me know! I'd love for you to come back and give the recipe a 5 star rating and leave a review in the comments! 🙂 Let's stay connected, so please follow me on Instagram, Facebook, and Pinterest! Subscribe to my newsletter to get healthy fresh recipe ideas every week!
📖 The recipe.
Chicken Fajita Soup (Crockpot Recipe)
Ingredients
- 1 cup onion (diced)
- 4 bell peppers (cut into bite-sized pieces - make it pretty with different colored peppers!)
- 2 garlic cloves (minced)
- 6 boneless skinless chicken thighs (cut into 1" pieces)
- 1 recipe or packet fajita seasoning mix
- 24 ounces chicken broth (additional broth may be added if you wish to dilute the soup)
- 8 ounces chunky salsa (additional salsa may be used to increase spice level)
- 2 cups sharp cheddar cheese (shredded)
- 1 cup heavy cream (or half and half)
- ½ cup sour cream (or more, if desired)
- Salt and pepper to taste
- Optional thickener: ½ teaspoon xanthan gum mixed with ½ teaspoon olive oil, or 1 tablespoon cornstarch dissolved in 2 tablespoons of cold water or broth.
Instructions
Crockpot Instructions
- Add onion, bell peppers, garlic, chicken thighs, broth, and fajita seasoning. Cook on low for 4 to 6 hours until chicken is done.
- About 30 minutes before serving, bring heavy cream and sour cream to room temperature.
- Add salsa and cheddar cheese, stirring until melted.
- Stir in heavy cream and then sour cream.
- Season with salt and pepper to taste. Serve and enjoy!
Instant Pot Instructions
- Add onion, bell peppers, garlic, chicken thighs, broth, and fajita seasoning to the Instant Pot.
- Secure lid and cook on High pressure for 4 minutes. Quick-release pressure after the cooking cycle is complete.
- While the soup is pressure cooking, bring heavy cream and sour cream to room temperature.
- Remove the lid from the pot once pressure is released. Add salsa and cheddar cheese, stirring until melted.
- Add heavy cream and then sour cream.
- Season with salt and pepper to taste. Serve and enjoy!
Video
Kori's Tips
- More helpful hints, substitution ideas, cooking tips, and delicious recipes can be found in our post. Check it out!
- TOP TIPS: Bring heavy cream and sour cream to room temperature before adding to hot soup to prevent curdling. Add more salsa to taste if desired. Additional broth may be used if needed.
- SERVING SUGGESTIONS: Top with additional cheese, salsa, and a dollop of sour cream to garnish. Also great with diced avocado, fresh cilantro, and diced tomato on top! Serve with tortilla chips or warmed flour tortillas.
Nutrition
© 2025 Seeking Good Eats™
Be sure to check out these three delicious Mexican-style chicken soups - easy and delicious Green Enchiladas Chicken Soup and Chicken Enchilada Soup (with red sauce). If you love tacos be sure to try this "souper" easy 7 Can Chicken Taco Soup! If you don't want soup, then you'll love Chicken Fajita Casserole.
More Recipes To Love
- Creamy Beef Taco Soup (Instant Pot Soup Recipe)
- Easy Tomato and Basil Soup (Instant Pot and Slow Cooker Soup)
- Green Enchiladas Chicken Soup
- Crockpot Cream of Chicken and Mushroom Soup
- Keto Chicken Chili (Slow Cooker)
- Crockpot Chicken Curry
- Creamy Potato Soup Recipe
- Creamy Buffalo Chicken Soup Recipe
Crockpot Chicken Fajita Soup Recipe is an easy dinner idea! So tasty and easy to make in the slow cooker. The perfect Mexican recipe for weeknight dinners. Low carb and keto soup recipe. Easily adapted Instant Pot recipe. Keto Chicken Fajita Soup can be enjoyed by your whole family. #crockpot #soup #chickenfajita #mexicanrecipe #chickensoup #easydinner #easyrecipe #dinnerrecipe #dinneridea #tacotuesday #slowcooker #lowcarb #mexican #keto #seekinggoodeats #instantpot
Steve
How much salsa? The recipe says 8oz...the picture shows 2 cups/16 oz
Also how much broth? 24 oz per recipe vs 32 in picture
seekinggoodeats
Please follow the recipe card. All reviews are based off of the recipe card.
Maureen
Your print button isn’t working, keeps opening in a new window. Don’t know if it’s just because I’m on my iPad. Will be trying this as my husband and I really love homemade soups. Was hoping to be able to save it.
seekinggoodeats
Oh, sorry you're having troubles! I just checked and it seems to be working fine on all my devices. It should open another window with a print screen then you can select what view you want to print. Maybe that is what you're seeing? I hope you enjoy this soup - it's one of my absolute favorites - my husband's too! 🙂
dupree
Super good recipe. My second time I made this I grilled the chicken slightly and then cut up and added to broth. So GOOD!!!
seekinggoodeats
Adding grilled chicken sounds fabulous! Love it. Thank you for trying the chicken fajita soup recipe out 🙂 Glad you enjoyed it.
Michelle
This is so delicious! The only thing I did different was add 2 taco seasoning packets, 1 was spicy and 1 was low sodium instead of fajita seasoning. My salsa was medium and the flavor was excellent.
seekinggoodeats
Great ideas! Thank you for trying out the recipe, glad you enjoyed it. This is one of my favorites!!
Lisa Clogg
Does this soup freeze well?
Kori
Hi! You can, but a couple of thoughts. Dairy can often separate when frozen and since there is so much dairy in this recipe it does. Separation won't affect the taste though. If you choose to freeze the soup from the full recipe with dairy added, you can offset the separation by adding a little extra cream before reheating. You can also freeze the soup before adding the dairy products. Thaw in the refrigerator and warm in your crockpot when ready to serve. Add the dairy products (See recipe card) after the soup is warm. Hope that helps! Enjoy!
Ezmi
Can this be cooked on high? Thank you.
Kori
Hello, yes it can cook in your crockpot on High for 3 to 4 hours until the chicken is done and vegetables are tender. Turn it down when you add the dairy though. I hope you enjoy! 🙂
Suzanne
Hi,
Have you ever used chicken breast instead of thigh meat?
Kori
Yep! I've done it many times. Thighs add a little bit more richness to the soup (because they contain more fat), but it will still be very good! 🙂 Enjoy!
Teresa Pelt
If I’m making this for a friend, is it okay to add the sour cream, whipping cream, cheese & salsa as directed if it is going to be reheated?
Kori
What a lovely idea! Yes, it is totally fine! 🙂 I hope they enjoy the souop!
Kat Miller
Thank you for this AMAZING & DELICIOUS recipe! I made it this past week for my family! It was a big hit! And know I’m making it for a family who’s under the weather and needs meals. So easy to prepare and I love the fajita seasoning recipe too!
Kori
Awwww! Thank you so much!! 🙂 I'm super happy you and your family loved this soup. It is actually my favorite soup to make and serve my family too - it's like cozy comfort. Hope everyone in your family gets to feeling better soon!
Jan
I'm getting ready to make this in crockpot. In the directions I do not find a direction regarding adding the taco seasoning, only salt. From photos it looks like you sprinkle it over chicken before addition liquid.
seekinggoodeats
You are so right! Thank you for catching that!! Typo on my part. Add the taco seasoning in with the chicken. I added it to the instructions! Enjoy the soup! 🙂
Kaitlin
Made this recipe in my instant pot. Um... So yum. Cant wait to make it again!!!! The only thing I did "different" was no bell peppers. Also, I soaked a whole small onion (yellow, diced and over 1 heaping cup), the garlic, oil in the broth in frig. And I diced and sliced random bite sized pieces of chicken and also frozen that with the rest of the broth in a seperate container in the freezer. I food prepped it all Sunday and then made it Tuesday, so I pulled out the meat to the frig 24 hours before making it, I didnt know when i was going to be making it so this is why I froze it, I recommend not if your schedule and food prep allows. It was still a little frozen and stuck together, so I added 3 minutes to the total pressure cook. I dont like cooked bell peppers, so I skipped them entirely.
Waited about 22 minutes before I decided to release the remainder of pressure, we were hungry, and the remaining released in about a second, so not much was left. It was perfect! Added the close to room temp cheese and salsa. Then room temp sour cream and half&half. Left our more salsa and sour cream, sliced avocado, cheese and chips to add on top if they wanted. It was a hit!!! Highly recommend!!!
seekinggoodeats
Thank you Kaitlin! Great tips!
Kaitlin
Thank YOU! This is in my top 3 favorite recipes!! Would have never known! Making it for Superbowl Sunday in Feb per my friend's request! Cant wait for everyone else to try it out!