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 Tangy Norwegian Flounder Casserole?

You need 13 ingredients. The key ingredients include: 2 Tbsp. finely chopped onion, 2 Tbsp. margarine or cooking oil, 2 Tbsp. flour, 1 c. milk (skim okay), and more.

Is Tangy Norwegian Flounder Casserole suitable as general?

Yes, Tangy Norwegian Flounder Casserole falls under the General category and is a great choice for this type of meal.

How do I store leftover Tangy Norwegian Flounder Casserole?

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

Tangy Norwegian Flounder Casserole Recipe

Name: Tangy Norwegian Flounder Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 Tbsp. finely chopped onion; 2 Tbsp. margarine or cooking oil; 2 Tbsp. flour; 1 c. milk (skim okay); 1/2 tsp. salt; 1/8 tsp. dill weed (optional); 1 tsp. lemon juice; 1/2 (10 oz. size) pkg. thawed or 2 fresh thin flounder, cod, sole or halibut filets, cut up; 3/4 c. cooked potato slices (about 2 medium potatoes; can use canned); 3/4 c. soft bread crumbs; 2 Tbsp. margarine; dash of paprika; spicy brown mustard to taste

Try this homemade Tangy Norwegian Flounder Casserole recipe the whole family will love. Made with onion, margarine, flour and milk. Easy step-by-step in…

This Tangy Norwegian Flounder Casserole relies on simple, everyday ingredients such as finely chopped onion, margarine or cooking oil, flour and milk (skim okay). It comes together quickly and makes 4 servings, at about 168 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 General

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

A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

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

My Personal Notes

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Tangy Norwegian Flounder Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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