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Keto Creamy Crab Soup (FAST)

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Quick and easy keto creamy crab soup. Easily make this delicious bisque with fresh crab or canned crab.

My favorite comforting, low-carb seafood stew, ready in only 15 minutes!

easy keto / low carb crab soup made with real crab or canned!
Old Bay seasoning is great with this soup

Why you’ll love this creamy seafood soup

My family loves this crab loaded, seafood soup because it’s full of buttery, creamy flavor. It’s the perfect comfort food.

Can I have crab on the keto diet?

Is crab low carb and keto friendly? Yes. Seafood is naturally carb-free.

One can of crab meat has no carbs! That’s right! None. Nada.

creamy crab soup with parmesan cheese on top
creamy keto crab soup with parmesan cheese on top

How do I make low carb creamy crab soup?

This low-carb and keto friendly crab bisque is so easy to make and inspired by Martha Stewart’s shrimp Bisque.

  1. First, you’ll start with a roux-type of base for the soup. I like to use almond flour and butter to begin. In many traditional soups, you’ll see a flour and butter base, but this one doesn’t have all those nasty carbs!
  2. Next, add in your dairy: half and half, cream cheese, and heavy whipping cream.
  3. Finally, add in the crab and seasonings to the mix.
whisking together crab bisque roux
whisking the soup

What seasonings can I add to crab soup?

I like to use dried chives, Old Bay Seasoning and Tony’s Creole seasoning.

If you don’t have Tony’s or chives, you may use fresh onions, onion powder, or garlic powder to substitute those ingredients.

Just give it a little taste-test to determine your preferences of flavor.

crab soup with Old Bay seasoning
Crab soup with Old Bay seasoning

Can I use canned crab to make crab soup/bisque?

I have to admit, I was really skeptical about using canned crab for this recipe.

However, it was all I had on hand.

To be perfectly honest, I wanted a fast crab soup that tasted like lobster bisque, but without all the fuss and long list of ingredients.

This soup is simple, yet full of flavor, just like lobster bisque.

creamy low carb crab chowder

Can I freeze crab soup?

I do not recommend freezing this soup because of all the dairy.

How long will seafood stew last in the fridge?

Crab soup will last up to 3 days in the refrigerator. If you’re unsure, just sniff and you’ll definitely know!

What are crab substitutions?

No crab? No problem! For this recipe, you may use imitation crab, canned or the real deal.

No crab? You can use canned chicken and peppers for a delicious creamy chicken pepper stew.

Leftover crab? Make a cajun seafood foil pack right in the oven!

creamy keto crab soup

Keto Creamy Crab Soup

Quick and easy keto creamy crab soup, made with fresh crab or canned crab.
4.54 from 77 votes
Print Pin Rate
Course: Appetizer, Main Course
Cuisine: American
Prep Time: 3 minutes
Cook Time: 15 minutes
Total Time: 18 minutes
Servings: 8
Calories: 366kcal
Author: Amber @ Low Carb Quick



  • On medium-low heat, melt butter in a large pot. Add almond flour with cream cheese and whisk until incorporated.
  • Whisk in heavy whipping cream and half and half.
  • Add crab and remaining ingredients and cook on med-low until hot.
  • Serve with parmesan cheese, if desired.


Serving: 1cup | Calories: 366kcal | Carbohydrates: 5g | Protein: 6g | Fat: 36g | Saturated Fat: 22g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 10g | Trans Fat: 1g | Cholesterol: 127mg | Sodium: 217mg | Potassium: 157mg | Fiber: 1g | Sugar: 1g | Vitamin A: 1316IU | Vitamin C: 2mg | Calcium: 118mg | Iron: 1mg

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Saturday 9th of July 2022

If I don’t have heavy whipping cream, can I just use a pint of half and half or condensed milk?

Amber @ Low Carb Quick

Friday 26th of August 2022

You can, or I would recommend cream cheese for more creaminess in that case. Thanks for stopping by, Hannah!


Thursday 1st of July 2021

Looks great and am going to make it tonight and way...but, when I entered the recipe into my tracker as Serving 8(which is how it is on Pintrest and how it printed) The numbers came out as CARB 8 CAL 399 ?


Thursday 1st of July 2021

Hello Patty, I have ran this recipe through my ingredient calculator in my recipe plugin after updating again. It is showing 5 g. carbs and 366 calories for each of 8 total servings. I'm not sure why Pinterest is showing anything different, it must be pulling outdated data from the old servings. The plugin I use to calculate nutritional info is through Word Press Recipe Maker, which is the gold standard for food and content bloggers. Thank you for bringing this to my attention, I will be looking more closely at Pins to insure they are properly updated when I update a recipe.


Saturday 8th of May 2021

So approx how much is a serving size ?


Monday 10th of May 2021

Hi Debbie! I have updated the recipe to reflect the serving size. Thanks so much for stopping by!


Tuesday 4th of May 2021

Nevermind my comment about the high carbs. I was using imitation and that’s the difference. Thank you for the delicious recipe!

Saturday 23rd of October 2021

@Jaci, I made this tonight (as mentioned above, with no 1/2 and 1/2) and I used 1 can crab meat (which is a small amount) so I took 2 frozen pieces of cod filet, put that in there until it cooked until flaky and brought them back out, and cut them and flaked them...............YOU CAN NOT TELL IT IS NOT CRAB. DELISH


Thursday 20th of May 2021

Ha! I answered and then scrolled down a little to see this comment! LOL


Tuesday 4th of May 2021

Hi Jaci, thanks so much for stopping by. I'm so glad you enjoyed the recipe. Happy cooking! -Amber


Tuesday 4th of May 2021

This soup is delicious!! But I am VERY confused on the carb count? Every source I’ve looked into for the carb count says crab meat is very high in carbs?? This article says there’s 0 and I can’t find anywhere that agrees with that as much as I WANT it to be true!!??


Thursday 20th of May 2021

Meats don't generally have carbs in them. Some seafoods (like shrimp, clams, oysters, squid) have carbs, but they are very low in carbs still. Crab does not have carbs. You might be looking at imitation crab, which is definitely high in carbs.

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