Creamy White Sauce Fish Recipe: Succulent Pan-Seared Fillets

Impress your family and friends with this easy Fish in White Sauce recipe. Ready in 25 minutes, it’s perfect for weeknights or a casual dinner party. Quantities can be doubled to feed more people.

Cooked fish fillets in a skillet with white sauce.

Tender fish fillets are finished in a creamy, lemony white sauce flavored with butter, garlic and parsley. The mild sweetness of tilapia (or another white fish) pairs beautifully with the bright citrus and savory stock, creating a silky sauce that coats each bite.

This dish pairs well with many sides—try garlic herb rice, sautéed vegetables, pasta, buttermilk mashed potatoes, or a simple green salad. It’s a flexible, family-friendly dinner: my kids enjoy it with pasta while my husband prefers it with rice.

Dipping fork into fish in white sauce.

Table of Contents

  • Why You’ll Love Fish In White Sauce
  • Ingredients Needed
  • How To Make Fish In White Sauce
    • 1. Pat dry tilapia fillets and season them.
    • 2. Heat olive oil in a large skillet.
    • 3. Lightly cook the fish, flipping halfway through.
    • 4. Remove the fish from the pan.
    • 5. Melt butter and add minced garlic.
    • 6. Stir in flour and liquids (except the lemon juice).
    • 7. Let it simmer before adding the fish back to the pan.
    • 8. Finish cooking the fish in the sauce.
    • 9. Adjust the seasoning and add lemon juice.
    • 10. Garnish with parsley and serve warm.
  • Substitutions and Variations
  • Expert Tips
  • What Kind Of Fish Should I Use?
  • Recipe Frequently Asked Questions
  • More Recipes With Creamy Sauce
  • Serving
  • More Easy Dinner Recipes
  • Fish In White Sauce Recipe

Why You’ll Love Fish In White Sauce

  • High in protein: A cooked fillet provides a substantial amount of protein, making this a nourishing meal.
  • Quick to prepare: From start to finish this recipe takes about 25 minutes, ideal for busy evenings.
  • Budget friendly: Tilapia and other white fish are generally affordable, yet the creamy sauce makes the dish feel indulgent.

Ingredients Needed

Measured ingredients needed for recipe.

The recipe card below lists quantities; the main ingredients are:

  • Tilapia fillets or other white fish: Mild, slightly sweet flesh works well with garlic, stock and lemon. Use room temperature fillets for even cooking.
  • Olive oil: Prevents sticking and helps brown the fish.
  • Lemon juice: Added at the end to brighten the sauce.
  • Garlic: Fresh minced garlic becomes fragrant and toasty in butter.
  • Heavy cream: Creates a rich, velvety sauce; milk will yield a thinner result.

Use fresh fish when possible: it should smell mild and have firm flesh.

How To Make Fish In White Sauce

No special techniques are required. Follow these straightforward steps:

1. Pat dry tilapia fillets and season them.

Raw seasoned fish fillets.

2. Heat olive oil in a large skillet.

3. Lightly cook the fish, flipping halfway through.

Seasoned and cooked fish in pan.

4. Remove the fish from the pan.

5. Melt butter and add minced garlic.

Garlic, butter, and flour in pan.

6. Stir in flour and liquids (except the lemon juice).

Mixing white sauce with a whisk.

7. Let it simmer before adding the fish back to the pan.

White sauce cooking in a pan.

8. Finish cooking the fish in the sauce.

Fish cooking in white sauce.

9. Adjust the seasoning and add lemon juice.

10. Garnish with parsley and serve warm.

Fish in white sauce garnished with minced parsley.

Garnish with fresh dill or parsley for an elegant finish. Leftovers keep in an airtight container in the refrigerator for up to 3 days; reheat gently over low heat and add stock or milk if the sauce has thickened.

Fish cooks quickly—stop when it flakes easily with a fork to avoid overcooking.

Substitutions and Variations

Customize the dish to suit your tastes or dietary needs:

  • Different fish or proteins: Swap tilapia for cod, mahi mahi, halibut, or red snapper. The same method works well with chicken breast or pork chops if you prefer.
  • Seasonings and herbs: Try lemon zest, oregano, or lemon pepper for a flavor twist.
  • Gluten-free option: Use a gluten-free flour blend or cornstarch as a thickener—adjust quantities per the product instructions.
Fish in white sauce with lemon slices.

Expert Tips

  • Defrost fillets in the refrigerator overnight for best texture, or place sealed fillets in cold water, changing the water every 20 minutes for a faster method.
  • Check for small pin bones before cooking and remove them with clean tweezers if present.
  • Choose responsibly sourced fish when possible for better quality and lower contaminants.

What Kind Of Fish Should I Use?

When tilapia is unavailable, other white fish like cod, catfish, flounder, halibut, or red snapper work well. Each fish has its own texture and flavor, but the creamy lemon-garlic sauce complements them all.

Fork showing flakiness of cooked fish.

Serving suggestions: steamed rice, buttered pasta, or roasted vegetables all pair nicely with the creamy sauce.

Recipe Frequently Asked Questions

What Are Popular White Fish Fillets?

Popular white fish fillets include cod, halibut, flounder, tilapia, sea bass, grouper, haddock, catfish, and red snapper. Availability and preference vary by region and cuisine.

What Sauces Are Good With Fish?

Many sauces complement fish: creamy lemon-white sauce (as used here), pesto, beurre blanc, mustard-based sauces, white wine sauces, or dill sauce, depending on the fish and flavor you want.

Is White Sauce Just Alfredo Sauce?

No. Classic white sauce (béchamel) is a roux of fat and flour combined with milk or cream. Alfredo is a cream-and-butter based sauce that typically includes Parmesan and usually does not contain flour.

More Recipes With Creamy Sauce

More creamy, comforting recipes to try at home:

Chicken Drumsticks in Creamy Sauce

Chicken in White Sauce

Marry Me Chicken

Serving

Recommended sides to serve with Fish In White Sauce:

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Fish in white sauce with lemon slices.

Fish In White Sauce

4.50 from 2 votes
Flaky fish in a creamy, lemony white sauce with garlic—an easy dinner ready in 25 minutes.
Prep: 5
Cook: 20
Total: 25
Servings: 4 servings
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Ingredients  

  • 1 pound tilapia fillets or loins 3-4 fillets; substitute other white fish like snapper or sea bass
  • ¼ teaspoon salt
  • ¼ teaspoon black pepper
  • 1 teaspoon Italian seasoning
  • 2 tablespoons olive oil
  • 2 Tablespoons unsalted butter
  • 3 cloves garlic, minced
  • 1 Tablespoon flour
  • 1 cup chicken stock
  • cups heavy cream
  • 1-2 Tablespoons fresh lemon juice
  • Parsley for garnish

Instructions 

  • Pat room-temperature tilapia dry and season both sides with salt, pepper and Italian seasoning.
  • Heat olive oil in a large (12-inch) skillet over medium-high heat for about 2 minutes.
  • Add the fillets and cook on one side for 3 minutes. Carefully flip and cook 2 more minutes. Remove fish from the pan.
  • Add butter to the pan and melt. Reduce heat to medium, add minced garlic and stir until fragrant (about 10 seconds). Stir in flour for 30 seconds to remove the raw taste. Whisk in chicken stock and simmer for 5 minutes, stirring occasionally until the sauce thickens and becomes glossy. Whisk in heavy cream and simmer another 5 minutes.
  • Return the fish to the pan and simmer 2 minutes to finish cooking. Taste and adjust seasoning, then stir in fresh lemon juice to taste.
  • Garnish with minced parsley and serve warm over mashed potatoes, pasta, or rice.

Notes

Storage and reheating: Store leftovers in an airtight container for up to 3 days. Reheat the sauce gently over low heat, adding chicken stock or milk if it becomes too thick.

Other fish options: Cod, catfish, flounder, halibut, or red snapper can be used in place of tilapia. Choose sustainably sourced fish when possible.

Nutrition

Calories: 507kcal | Carbohydrates: 7 g | Protein: 27 g | Fat: 42 g

Additional Info

Course: Dinner
Cuisine: Western
Calories: 507
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