Simple Seafood Casserole

Posted on December 25, 2025 | By : Rihanna Recipes

A delicious simple seafood casserole dish, ready to serve.

Why make this recipe

Simple Seafood Casserole is a great dish for anyone who loves seafood but wants an easy recipe. This casserole is quick to prepare, uses basic ingredients, and is perfect for family dinners or gatherings. It’s creamy, cheesy, and packed with shrimp and tuna, making it a favorite among seafood lovers. Plus, it’s a great way to use leftover rice!

How to make Simple Seafood Casserole

Ingredients:

  • 1 can tuna, drained
  • 1 cup shrimp, peeled and deveined
  • 1 cup cooked rice
  • 1 cup cream of mushroom soup
  • 1 cup grated cheddar cheese
  • 1/2 cup milk
  • 1/2 cup frozen peas
  • 1/2 teaspoon garlic powder
  • Salt and pepper to taste
  • Breadcrumbs for topping
  • Chopped parsley for garnish (optional)

Directions:

  1. Preheat the oven to 350°F (175°C).
  2. In a large mixing bowl, combine tuna, shrimp, cooked rice, cream of mushroom soup, milk, garlic powder, peas, salt, and pepper. Mix well.
  3. Transfer the mixture to a greased baking dish.
  4. Sprinkle grated cheddar cheese on top, followed by breadcrumbs.
  5. Bake in the preheated oven for 25-30 minutes or until the top is golden brown and bubbly.
  6. Garnish with chopped parsley if desired and serve warm.

How to serve Simple Seafood Casserole

Serve Simple Seafood Casserole warm from the oven. It pairs well with a simple salad or some crusty bread. You can dish out generous portions and make it the star of a cozy dinner.

How to store Simple Seafood Casserole

If you have leftovers, store them in an airtight container in the refrigerator. The casserole will keep well for 3-4 days. To reheat, simply place it in the oven or microwave until heated through.

Tips to make Simple Seafood Casserole

  • Make sure to drain the tuna well to avoid extra moisture in the casserole.
  • You can use fresh shrimp if you prefer, but frozen shrimp is just as convenient.
  • For added flavor, consider using a different type of cheese, like mozzarella or gouda.
  • If you want a little heat, add some red pepper flakes to the mixture.

Variation

You can easily switch up the seafood in this casserole. Feel free to add crab meat or scallops for a different flavor. Additionally, you might replace cream of mushroom soup with cream of chicken or even a homemade white sauce for a more gourmet touch.

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Simple Seafood Casserole


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  • Author: rihannarecipes
  • Total Time: 45 minutes
  • Yield: 4 servings 1x
  • Diet: Seafood

Description

A creamy and cheesy seafood casserole featuring shrimp and tuna, perfect for family dinners.


Ingredients

Scale
  • 1 can tuna, drained
  • 1 cup shrimp, peeled and deveined
  • 1 cup cooked rice
  • 1 cup cream of mushroom soup
  • 1 cup grated cheddar cheese
  • 1/2 cup milk
  • 1/2 cup frozen peas
  • 1/2 teaspoon garlic powder
  • Salt and pepper to taste
  • Breadcrumbs for topping
  • Chopped parsley for garnish (optional)

Instructions

  1. Preheat the oven to 350°F (175°C).
  2. In a large mixing bowl, combine tuna, shrimp, cooked rice, cream of mushroom soup, milk, garlic powder, peas, salt, and pepper. Mix well.
  3. Transfer the mixture to a greased baking dish.
  4. Sprinkle grated cheddar cheese on top, followed by breadcrumbs.
  5. Bake in the preheated oven for 25-30 minutes or until the top is golden brown and bubbly.
  6. Garnish with chopped parsley if desired and serve warm.

Notes

Make sure to drain the tuna well to avoid extra moisture in the casserole.

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Main Course
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 400
  • Sugar: 3g
  • Sodium: 700mg
  • Fat: 20g
  • Saturated Fat: 10g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 35g
  • Fiber: 2g
  • Protein: 25g
  • Cholesterol: 70mg

FAQs

Can I make this casserole ahead of time?
Yes, you can prepare the mixture a day in advance and store it in the refrigerator. Just bake it when you’re ready to serve.

Is this casserole gluten-free?
To make it gluten-free, use gluten-free breadcrumbs and check that your canned soup is also gluten-free.

Can I use other vegetables in the casserole?
Absolutely! You can toss in corn, bell peppers, or any other vegetable you like to customize your dish.

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