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 Cheesy Fish Potato Casserole?

You need 13 ingredients. The key ingredients include: 1 (6 ounce) can tuna or (6 ounce) can leftover fish, diced, 2 cups sliced potatoes, 1 cup sour cream, 1 1/2 cups cottage cheese, and more.

Is Cheesy Fish Potato Casserole suitable as seafood?

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

How do I store leftover Cheesy Fish Potato Casserole?

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

Cheesy Fish Potato Casserole Recipe

Name: Cheesy Fish Potato Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 (6 ounce) can tuna or (6 ounce) can leftover fish, diced; 2 cups sliced potatoes; 1 cup sour cream; 1 1/2 cups cottage cheese; 1/2 sliced chives; 1/2 onion, diced; 2 tomatoes, diced; 4 ounces cream cheese; 2 cups milk; 1 teaspoon cajun seasoning; 1/3 lime, juice of; 1/2 jalapeno, diced; 2 cups mozzarella cheese

Try this homemade Cheesy Fish Potato Casserole recipe the whole family will love. Made with tuna, potatoes, sour cream and cottage cheese. Easy step-by-…

This Cheesy Fish Potato Casserole relies on simple, everyday ingredients such as sliced potatoes, sour cream, cottage cheese and sliced chives. It comes together quickly and makes 4 servings, at about 754 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

Coconut cream is a reliable plant-based alternative to dairy cream.

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

My Personal Notes

Saved locally in your browser — visible only to you.

Cheesy Fish Potato Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions