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.

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.

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

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.

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.

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.

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.

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

Garlic Butter Green Beans

Pan Fried Brussels Sprouts With Bacon

Sauteed Peppers

Easy Coconut Rice

Easy Roasted Potatoes
More Easy Dinner Recipes
More simple dinner ideas to try:

Pan Seared Flank Steak

Pan Seared Boneless Chicken Thighs

Bone In Ribeye Steak

One Pot Chicken Thighs And Rice

107 Easy Dinner Recipes For Family

Mediterranean Baked Fish
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Fish In White Sauce
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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
- 1¼ 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.
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Heat olive oil in a large (12-inch) skillet over medium-high heat for about 2 minutes.
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Add the fillets and cook on one side for 3 minutes. Carefully flip and cook 2 more minutes. Remove fish from the pan.
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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.
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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.
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Garnish with minced parsley and serve warm over mashed potatoes, pasta, or rice.
Notes
Other fish options: Cod, catfish, flounder, halibut, or red snapper can be used in place of tilapia. Choose sustainably sourced fish when possible.