Seafood Casserole with Red Lobster Biscuits

Seafood Casserole with Red Lobster Biscuits combines shrimp and haddock with mixed vegetables and creamy soup to create a rich, creamy casserole. We top it with biscuits made with Red Lobster biscuit mix to complete the classic flavor profile.

seafood casserole in a baking dish.

Red Lobster is almost everyone’s favorite seafood restaurant, and it’s not hard to see why. Their food is really good! We love Red Lobster, but we’re not going to pay those prices all the time! That’s why we love making this seafood casserole. When we top it with biscuits made with Red Lobster biscuit mix, it creates a flavor profile that has us feeling like we’ve gone out to eat with every bite.

bowl full of seafood casserole.

❤️ Why You’ll Love This Recipe

  • It’s a rich, creamy casserole perfect for any occasion.
  • It has all the Red Lobster flavor without the Red Lobster prices.
  • It only takes a few simple ingredients to make.
  • This rich creamy casserole is always a hit with both kids and adults.


bowls of cream, seafood, mixed vegetables, garlic, butter, condensed soup, and a box of biscuit mix.

You’ll only need a few ingredients to make this recipe, and you can find them all easily at your local grocery store.

The ingredients are listed here, but you can find their exact amounts in the recipe card at the end of the post.

  • Red Lobster biscuit mix – prepared as directed
  • Raw shrimp and haddock combined
  • Butter
  • Mixed frozen vegetables
  • Cream of celery soup
  • Cream
  • Fresh garlic – minced
  • Salt, pepper, and garlic powder to taste

🔪 How to Make Seafood Casserole with Red Lobster Biscuits

Making this casserole is a breeze. It only takes a few minutes of prep, and then you just bake it until it’s done. That’s all there is to it!

Step 1: Prep

Preheat the oven to 375 degrees, then melt the butter and add it to a 9×13 baking dish.

shrimp and fish added to a glass casserole dish.

Step 2: Add the Seafood and Seasonings

Evenly distribute the shrimp and haddock in the bottom of the baking dish. Then, season with salt, pepper, garlic powder, and chopped garlic. Finally, add the vegetables evenly over the top of the seafood.

cream sauce being added to a baking dish filled with vegetables.

Step 3: Make the Cream Sauce

Mix the soup and cream in a bowl, then pour it over the fish and vegetables.

biscuit mix being added to the top of seafood casserole in a glass baking dish.

Step 4: Mix the Biscuit Dough

Mix the biscuit dough according to the package directions. Then, drop the dough evenly across the top of the casserole.

uncut seafood casserole in a glass baking dish.

Step 5: Bake

Cover the casserole and bake for 20 minutes. Then, uncover the dish and bake for another 15 minutes. You can also turn the oven up to 400 and bake for another 10 minutes. let stand for 5 to 10 minutes and enjoy!


Do you want to change up this recipe and make it your own? Here are some ways that you can do that!

  • Spicy – Add red pepper flakes for a kick of heat.
  • Soup – This is a thin casserole, so serve it in a bowl as soup with biscuits on the side.
  • Seafood – Prawns work in place of shrimp, and any whitefish works in place of haddock. You can also add your other favorite seafood items to this casserole.
  • Thicker – For thicker casserole, reduce the amount of cream.

If you think this seafood casserole looks good, then check out our other simple seafood casserole recipe.

🥄 Equipment

  • Measuring cups and spoons
  • Mixing bowl
  • 9×13 baking dish

🥫 Storage

Remove the biscuits from the top and refrigerate the casserole for up to 3 days in an air-tight container. Refrigerate the biscuits for up to 3 days, as well.

Serve With

Serve this casserole with a side salad to keep things light. It’s a hearty, one-dish meal that requires no sides.

💭 Tips

  • It’s important to mix the soup and cream before adding them to the dish so they create a nice sauce.
  • Always add your butter to the dish first. This keeps the seafood from sticking and adds richness to the sauce.
  • To make storage easier, you can bake the biscuits separately so they don’t get soggy.

⁉️ FAQ

Do you have questions about this recipe? Here are the answers to the most commonly asked questions.

How do I keep my biscuit topping from getting soggy?

If you need to store your casserole, remove the biscuits from the top to keep them from soaking up the liquid while they’re stored.

Can I use other seafood in this casserole?

Yes! Lobster tails, scallops, crab, and most of your other favorite seafood items will work in this casserole.

Why was my casserole so thin?

This casserole is thin by design. If you prefer a thicker sauce, simply reduce the amount of cream used in the recipe.

🍽 More Recipes

Do you enjoy seafood? Then try these delicious recipes:

🧾Recipe Card

Want to make this recipe? Print the recipe card below, or pin this recipe so you can find it later.

seafood casserole in a baking dish.

Seafood Casserole with Red Lobster Biscuits

This seafood casserole with Red Lobster biscuits is rich, creamy, made with shrimp, fish, a creamy sauce, and Red Lobster biscuit mix.
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Course: Main Course
Cuisine: American
Prep Time: 5 minutes
Cook Time: 35 minutes
Total Time: 40 minutes
Servings: 6 Servings
Calories: 561kcal


  • 9×13 baking dish
  • large bowl
  • medium bowl


  • 11.36 ounces Red Lobster Biscuit Mix prepared as directed
  • 4 cups raw shrimp and haddock combined or any white fish if haddock isn’t available
  • ½ cup Butter 1 stick
  • 12 ounces Vegetables mixed, frozen
  • 1 can Cream of Celery soup 10 ounces
  • 1 cup cream
  • 2 clove fresh garlic minced
  • salt, pepper and garlic powder. to taste


  • Preheat the oven to 375 degrees.
  • Melt the butter and transfer into a 9 x 13 baking dish.
  • Evenly distribute the shrimp and haddock into the bottom of the baking dish.
  • Season with salt, pepper, and garlic powder and chopped garlic
  • Evenly distribute the vegetables on top of the fish.
  • In a bowl, mix the soup and the cream. Mix well and carefully pour over the fish and vegetables.
  • In another bowl mix the biscuit mix
  • Carefully drop biscuits over the contents in the baking dish.
  • Bake covered with foil for 20 minutes. Then uncover the casserole and continue to bake for 15 minutes. Or turn the oven to 400 and cook for 10 minutes.
  • Remove from the oven and let sit for 5 – 10 minutes.


Any nutritional data I provide is an approximation and actual dietary information can vary based on ingredients and proportion sizes.


Serving: 1Slice | Calories: 561kcal | Carbohydrates: 49g | Protein: 30g | Fat: 27g | Saturated Fat: 12g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 9g | Trans Fat: 0.01g | Cholesterol: 252mg | Sodium: 1880mg | Potassium: 501mg | Fiber: 4g | Sugar: 9g | Vitamin A: 3915IU | Vitamin C: 7mg | Calcium: 262mg | Iron: 3mg

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