Recipe description
July 7, 2026
Oven-baked fish with mustard sauce
Flavorful oven-baked fish with mustard sauce for everyday gut-friendly meals.
78%
General Gut Health Match
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We found the following allergens in the recipe ingredients: egg, tree_nut, peanut, mustard, sulfites
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Takes about 2 minutes.
Why this recipe fits you
- Lean fish offers high-quality protein with a light fat profile.
- Mustard, herbs, and olive oil add flavor and polyphenols without heavy processing.
- Easy bake-and-serve format fits quick, gut-friendly weeknight meals.
Gut Health Score
How these gut-support scores are calculated
These scores are estimated from the recipe’s ingredients, nutritional profile, and gut-health relevance. They are intended as practical guidance, not as medical advice.
Fiber support
Looks at fiber-rich ingredients such as legumes, vegetables, fruit, whole grains, nuts, and seeds.
Polyphenol support
Reflects ingredients such as berries, herbs, spices, cocoa, olive oil, colorful vegetables, and other plant foods.
Diversity support
Considers the variety of plant-based ingredients used in the recipe.
Inflammation-balance support
Considers the balance between whole-food ingredients, healthy fats, added sugars, refined carbohydrates, and highly processed components.
Fermentation support
Reflects fermented ingredients or ingredients that may support microbial fermentation, such as prebiotic fibers.
Blood-sugar balance support
Considers fiber, protein, fat quality, added sugars, and the type of carbohydrates in the recipe.
Ingredients
fish
2
pieces
Seed, mustard
2
teaspoons
Oil, olive
2
tablespoons
Lemon juice
1
tablespoon
Salt
1
teaspoon
Black pepper
1
teaspoon
Parsley
2
tablespoons
Instructions
1
Preheat the oven to 400°F (200°C).
2
In a bowl, mix together mustard, olive oil, lemon juice, salt, and pepper.
3
Place the fish on a baking sheet and brush the mustard sauce generously over each piece.
4
Sprinkle chopped parsley on top of the fish.
5
Bake in the preheated oven for 20-25 minutes, or until the fish is cooked through and flakes easily with a fork.
6
Serve hot and enjoy your oven-baked fish with mustard sauce.
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Nutrition
320 kcal
Calories
32 g
Protein
6 g
Carbohydrates
2 g
Fiber
3 g
Sugar
14 g
Fat
3 g
Saturated fat
0.8 g
Salt
FAQ
What type of fish works best for this oven-baked dish?
Firm white fish such as cod, haddock, or pollock holds up well; salmon can be used too, but may cook faster.
How long and at what temperature should I bake it?
Bake at 200–220°C (400–425°F) until opaque and flaky, about 12–15 minutes for 1-inch-thick fillets.
Is the mustard sauce dairy-free and gluten-free?
Yes. The sauce can be made dairy-free and gluten-free by using dairy-free milk or yogurt and gluten-free thickeners or by avoiding dairy and gluten entirely.
Can I make this recipe ahead or store leftovers?
You can prepare ahead to a point; store cooked leftovers in the fridge for 2–3 days and reheat gently.
How many servings does it yield and roughly how many calories per serving?
It typically serves 2; calories vary with the fish and sauce ingredients.
What side dishes pair well with it?
Green vegetables, steamed greens, quinoa, brown rice, or roasted potatoes.
Is this dish suitable for a gut-friendly or plant-forward approach?
Yes, as part of a balanced gut-conscious pattern when paired with fiber-rich sides and moderate portions.
Can I substitute the sauce ingredients if I’m missing something?
Yes—try different mustards (Dijon, whole-grain) and lemon juice or yogurt as a base; herbs can be swapped.
What are common mistakes to avoid when baking fish?
Overcooking makes the fish dry; use fillets of similar thickness, preheat the oven, and test doneness by flaking with a fork.
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