How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Italian Seafood Casserole?

You need 14 ingredients. The key ingredients include: Vegetable cooking spray, 1 teaspoon olive oil, 3/4 pound fresh mushrooms, halved, 2 cups chopped green pepper, and more.

Is Italian Seafood Casserole suitable as seafood?

Yes, Italian Seafood Casserole falls under the Seafood category and is a great choice for this type of meal.

How do I store leftover Italian Seafood Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Italian Seafood Casserole Recipe

Name: Italian Seafood Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: Vegetable cooking spray; 1 teaspoon olive oil; 3/4 pound fresh mushrooms, halved; 2 cups chopped green pepper; 1 cup chopped onion; 1 teaspoon dried oregano; 4 cloves garlic, minced; 1 cup low-fat spaghetti sauce; 1/2 cup canned low-sodium chicken broth, undiluted; 1/2 cup dry Marsala wine; 2/3 pound large sea scallops, cut in half crosswise; 1/2 pound swordfish steak (1 inch thick), cubed; 3 cups cooked long-grain rice (cooked without salt or fat); 1/3 cup grated Parmesan cheese

Try this homemade Italian Seafood Casserole recipe the whole family will love. Made with Vegetable cooking spray, olive oil, mushrooms and green pepper.…

This Italian Seafood Casserole relies on simple, everyday ingredients such as vegetable cooking spray, olive oil, fresh mushrooms, halved and chopped green pepper. It comes together quickly and makes 4 servings, at about 837 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Seafood

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Feel free to swap in similar ingredients you already have on hand and adjust seasoning to taste.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

Saved locally in your browser — visible only to you.

Italian Seafood Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions