Cajun Crabmeat Au Gratin. A truly delicious recipe, full of fantastic flavors. Options to add shrimp or crawfish too! Delicious served as an appetizer or main meal.

Cajun Crabmeat Au Gratin. Wow! here we have a classic Seafood Au Gratin recipe with a twist of Cajun added to it. The flavors are truly wonderful!
This recipe has been kindly shared by our Lovefoodies supporter, Sally Hall. Sally often makes Cajun recipes and this Cajun crabmeat au gratin is one of many Sally makes for her family and friends.
It's flexible enough so you can add shrimp, crawfish, lobster or other seafood you enjoy the most. It's certainly a rich dish, given the ingredients listed below, so if you're on a diet, perhaps this delicious recipe will need to be saved for another time!
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The lovely sweet taste of the crab meat is cooked in a creamy cheese sauce, seasoned as you would expect, with classic Cajun flavors. It's a great dish to serve as an appetizer or main meal, perhaps with some lovely crusty bread fresh from the oven, or some pasta, or simply on its own with a side salad. Whichever way you decide to serve Sally's cajun crabmeat au gratin, be assured it will be truly delicious!
Please enjoy!
Prep Time
20 Minutes
Cook Time
30 Minutes
Serves
4 - 6
Ingredients
2 Egg yolks
1 pint Heavy Cream
4 oz or 110 g Butter
1 medium Onion, finely chopped
¼ cup Celery, finely chopped
¼ cup Red bell pepper, finely chopped
¼ teaspoons Salt
½ teaspoon Red/White/Black pepper
¼ teaspoon Garlic powder
⅛ teaspoon Celery salt
1 teaspoon Cajun seasoning
¼ cup All-purpose flour
1 package (2 cups) shredded Sharp cheddar cheese
1 package (2 cups) shredded mozzarella Cheese
1-2 packages or containers Crabmeat (12 - 16 oz)
1 package Crawfish tails or UNCOOKED Small-Med
Shrimp (12 - 16 oz)
1 bunch Green onions, chopped to about ½ inch pieces
Instructions
1. Preheat oven to 400 F or 200 C.Lightly grease a 9 x 9 inch baking dish (approximate size). *to customize this dish – individual smaller baking dishes can be used.
2. In a bowl, whip together the egg yolks and heavy cream.
3. Melt the butter in a large saucepan over medium heat. Sauté the onion, bell pepper and celery about 3-5 minutes. Season with salt, pepper, garlic powder, celery salt and Cajun seasoning. Reduce heat to low, cover, and simmer 10+ minutes, stirring occasionally, until very tender.
4. Mix the flour into the saucepan, and cook on medium heat and stir continuously for 5 minutes.
Mix in the egg yolk/cream mixture. Reserve ½ cup of cheddar and mozzarella cheese for topping.
Stir in the remaining Cheddar, & Mozzarella cheese until melted.
Remove from heat and fold in the crabmeat and crawfish or shrimp. Transfer the mixture to the prepared baking dish and sprinkle the cheese over the top.

5. Bake 30 minutes in the preheated oven, until bubbly and lightly browned. Remove from heat and top with the remaining cheeses (to taste) and green onions. Allow the cheese to melt before serving.
Serve with a salad, your favorite rolls or bread, or with rice or baked potato.
Can I freeze this crabmeat au gratin?
On a side note, you could also make these ahead and freeze. We suggest you follow up to step 4 inclusive and then freeze BEFORE baking. When you want to serve, simply defrost thoroughly and bake as instructed in Step 5 as normal.
We'd love to hear from you and what you thought of our post. Did you make any changes or add some other goodies? Let us know in the comments below. Thanks for reading and happy cooking!

Recipe Card

Cajun Crabmeat Au Gratin
Cajun Crabmeat Au Gratin. A truly delicious recipe full of fantastic flavors. Options to add shrimp or crawfish too! Delicious served as an appetizer or main meal.
Ingredients
- 2 Egg yolks
- 1 pint Heavy Cream
- 4 oz or 110 g Butter
- 1 medium Onion, finely chopped
- ¼ cup Celery, finely chopped
- ¼ cup Red bell pepper, finely chopped
- ¼ teaspoons Salt
- ½ teaspoon Red/White/Black pepper
- ¼ teaspoon Garlic powder
- ⅛ teaspoon Celery salt
- 1 teaspoon Cajun seasoning
- ¼ cup All-purpose flour
- 2 cups package shredded Sharp cheddar cheese
- 2 cups package shredded Mozzarella Cheese
- 1-2 packages or containers Crabmeat, (12 - 16 oz)
- 1 package Crawfish tails or UNCOOKED Small-Med, (12 - 16 oz)
- Shrimp
- 1 inch bunch Green onions, chopped to about ½ pieces
Instructions
- Preheat oven to 400 F or 200 C.Lightly grease a 9 x 9 inch baking dish (approximate size). *to customize this dish – individual smaller baking dishes can be used.
- In a bowl, whip together the egg yolks and heavy cream.
- Melt the butter in a large saucepan over medium heat. Sauté the onion, bell pepper and celery about 3-5 minutes. Season with salt, pepper, garlic powder, celery salt and Cajun seasoning. Reduce heat to low, cover, and simmer 10+ minutes, stirring occasionally, until very tender.
- Mix the flour into the saucepan, and cook on medium heat and stir continuously for 5 minutes. Mix in the egg yolk/cream mixture. Reserve ½ cup of cheddar and mozzarella cheese for topping. Stir in the remaining Cheddar, & Mozzarella cheese until melted. Remove from heat and fold in the crabmeat and crawfish or shrimp. Transfer the mixture to the prepared baking dish and sprinkle the cheese over the top.
- Bake 30 minutes in the preheated oven, until bubbly and lightly browned. Remove from heat and top with the remaining cheeses (to taste) and green onions. Allow the cheese to melt before serving.
- Serve with a salad, your favorite rolls or bread, or with rice or baked potato
Nutrition Information:
Yield: 6 Serving Size: 1Amount Per Serving: Calories: 876Total Fat: 77gSaturated Fat: 46gTrans Fat: 3gUnsaturated Fat: 23gCholesterol: 321mgSodium: 1216mgCarbohydrates: 13gFiber: 1gSugar: 4gProtein: 35g
Nutrition information isn’t always accurate
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Marianne
says:I made the Cajun Crabmeat Au Gratin for supper tonight, with a few minor changes. Instead of an onion, I used shallots. I also used fresh sliced mushrooms (1/2 lb) and minced garlic (rather than garlic powder). First, I cooked down the mushrooms (about halfway), then added the shallots, bell pepper, celery, and minced garlic for the next five minutes. Also, rather than sharp cheddar & mozzarella, I used what I had on hand, which turned out to be 2C of mild cheddar, 1 cup of Gruyere’, and an Italian cheese blend (1 cup). It turned out really well; no leftovers! I used individual ramekins; it made 6 VERY generous servings, with a salad & French bread on the side. Thanks for this great recipe!
Marianne
says:When you list the ingredients as “1-2 packages or containers” of crabmeat and “1 package crawfish tails or shrimp,” you need to give the weights of these packages or containers. Living in Indiana,!we can get 1# containers of blue crab crabmeat or 6 oz cans. The package of shrimp or crawfish, I assume is a one pound package. I’d like to make this for Christmas Eve, but I can’t without knowing the proportions. And, in the first text of the recipe you state 1 package of the cheese and (2 cups) but in the recipe pie to print you say 1 cup of each. I’d love to make this, but it’s very confusing as it is right now.
Lovefoodies
says:Hi Marianne, thanks for writing in. I’m sorry the recipe ingredients are confusing. For some reason, the ingredients didn’t transfer properly over to the print out recipe card but I’ve manually corrected those now for you so thank you for bringing it to my attention. I’ve also sent a message to Sally to ask her for precise quantities for the crabmeat and crawfish so I will update you as soon as she replies and also add that in the recipe so it’s more helpful for you.
Thanks for your patience and hope you have a wonderful Christmas!