Cajun crab casserole

Cajun crab casserole

A tasty and quick-to-make keto casserole with crab meat and delicious seasonings. The melt-in-your-mouth seafood in a cheesy-creamy combo makes for an excellent keto meal!

Cajun crab casserole

A tasty and quick-to-make keto casserole with crab meat and delicious seasonings. The melt-in-your-mouth seafood in a cheesy-creamy combo makes for an excellent keto meal!
4 servingservings


  • 2 tbsp 2 tbsp butter, for frying
  • 1 1 medium yellow onion, finely choppedmedium yellow onions, finely chopped
  • 5 oz. 150 g celery stalk, finely choppedcelery stalks, finely chopped (optional)
  • salt and pepper
  • 1¼ cups 300 ml mayonnaise
  • 4 4 egg, lightly beateneggs, lightly beaten
  • 16 oz. 450 g canned crab meat, drained
  • 12 oz. 350 g shredded, white cheddar cheese
  • 2 tsp 2 tsp paprika powder
  • ¼ tsp ¼ tsp cayenne pepper
For serving
  • 3 oz. 75 g leafy greens
  • 2 tbsp 2 tbsp olive oil


Instructions are for 4 servings. Please modify as needed.

  1. Preheat the oven to 350°F (175°C). Grease a 9x12 baking dish.
  2. Fry chopped onion and celery in butter until translucent. Salt and pepper to taste.
  3. In a separate bowl, add mayonnaise, eggs, crab meat, seasonings and ⅔ of the shredded cheese. Add the fried onion and celery. Stir to combine and season to taste.
  4. Add the mixture to the baking dish. Sprinkle the remaining cheese on top and bake for about 30 minutes or until golden brown.
  5. Serve with salad and olive oil.


This casserole is easy to vary by substituting the crab meat for canned tuna or other cooked fish like mackerel or salmon.

If you would like to make this dish even more gourmet, feel free to use parmesan cheese or gruyere for some extra wonderful layers of flavor.

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  1. Tracy
    This is actually one of my favorites. The only thing I changed was more celery and onion. I made for my family and everyone loved it!
  2. Star
    This recipe was so good! I loved it.
  3. Cassieoz
    I know I've said this before but canned crab is certainly NOT a budget ingredient here. I could buy almost 2kg of ground beef or 1.5kg of chicken thigh fillet for the same cost as this much canned crab
    Reply: #8
  4. Courtney
    What kind of cheese?!
    Reply: #5
  5. Andrea
    Probably any kind you like!
  6. Marsha
    I’d like to make a suggestion that you put in the recipe the size of baking dish to use. As for the price of the crab, yes it is pricey but we were able to buy canned crab for 15.00 which is what the recipe called for and while that is pricey split into the 4 servings, it can put to 3.75/serving. Since we do t eat this every night, it was a nice treat and very tasty. Thanks Marsha
  7. 1 comment removed
  8. Cheryl
    In the tips, it says you can easily replace with canned tuna or other fish.
  9. Lori Anne
    This looks great. I'm going to try it this weekend, but with vegan cheese. I'm doing keto as an limited egg+fish (mostly) vegetarian, and so far I'm finding that it's easy to substitute vegan cheeses in recipes. Throwing this out there for others who may not be able to do dairy. If you could note non-dairy cheese substitutions, it would be really helpful!
  10. Courtney
    Has anyone tried forming these into patties instead of the casserole dish? Was thinking of trying it that way instead...
  11. Jane
    Had this today for lunch and it's very good! I used canned crab meat and it was just fine. In fact, I think next time I'll add a can of shrimp, too. It "shred-y" like the crabmeat and, I think, would add even more seafood flavor. I added about 1/4 of a red bell pepper and I'd add a bit of lemon juice to brighten the flavor. Mmmmm.

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