This one-dish rockfish is a light, flavorful meal that comes together effortlessly in a single pan. With tender fish, fresh vegetables, and simple seasonings, it’s perfect for a quick and healthy dinner.
Everything bakes together beautifully, allowing the flavors to meld while keeping cleanup minimal. It’s an easy go-to recipe when you want something comforting yet fresh.
Why You’ll Love This Recipe
This dish is incredibly simple, using just one pan for both cooking and serving.
The combination of fresh spinach, juicy tomatoes, and flaky fish creates a balanced and wholesome meal.
It’s light yet satisfying, making it ideal for weeknight dinners.
The fresh dill and lemon add a bright, refreshing flavor.
What You’ll Need (Ingredient Highlights)
Fresh spinach forms a tender, nutritious base that soaks up all the flavors.
Rockfish fillets provide a mild, flaky texture that pairs well with herbs and citrus.
Cherry tomatoes add a burst of sweetness and color.
Vegetable broth keeps everything moist while enhancing the overall flavor.
Fresh dill and lemon bring a bright, aromatic finish.
Pro Tips Before You Start
Pat the fish dry before seasoning to help flavors adhere better.
Use fresh dill if possible for the best flavor, though dried can work in a pinch.
Covering the dish with foil helps keep the fish tender and prevents drying out.
Do not overbake, as the fish should flake easily but remain moist.
How to Make One-Dish Rockfish
Step 1 – Prepare the oven and ingredients
Preheat oven to 400°F (200°C) and gather all ingredients.
Step 2 – Layer the base
Spread spinach evenly across the bottom of a 2-quart baking dish.
Step 3 – Add fish and vegetables
Place rockfish fillets on top of the spinach and scatter cherry tomatoes around them.
Step 4 – Season and assemble
Pour in vegetable broth, then season the fish with dill, lemon pepper, garlic powder, onion powder, salt, and black pepper. Top each fillet with a slice of lemon, a slice of onion, and a small piece of butter.
Step 5 – Cover and bake
Cover the dish tightly with aluminum foil and bake for 20–25 minutes, until the fish flakes easily with a fork.
What to Serve Them With
Serve with steamed rice or quinoa to soak up the flavorful broth.
A side of crusty bread pairs well for a simple, comforting meal.
Add a light salad for extra freshness and balance.
Variations / Substitutions
Swap rockfish with cod, tilapia, or salmon depending on availability.
Use kale instead of spinach for a heartier green base.
Add sliced zucchini or bell peppers for extra vegetables.
Replace dill with parsley or thyme for a different herb profile.
Storage & Leftovers
Store leftovers in an airtight container in the refrigerator for up to 2 days.
Reheat gently in the oven or microwave to avoid drying out the fish.
FAQs
Can I make this recipe ahead of time?
Yes, you can assemble the dish ahead and refrigerate it before baking.
How should I store leftovers?
Keep leftovers in an airtight container in the fridge to maintain freshness.
Can I freeze this dish?
It is not recommended as the texture of the fish may change after freezing.
Can I substitute some of the ingredients?
Yes, you can swap fish types or greens based on what you have available.
How long does this recipe take to make?
It typically takes about 30–35 minutes from start to finish.
Is this recipe kid-friendly?
Yes, the mild flavors make it suitable for most palates.
Can I make this dish gluten-free or dairy-free?
Yes, simply omit the butter or use a dairy-free alternative.
What should I serve it with?
It pairs well with grains, bread, or a light vegetable side.
Do I need special equipment?
No, just a standard baking dish and oven are required.
How do I know when it’s perfectly cooked?
The fish should flake easily with a fork and appear opaque throughout.
Final Thoughts
This one-dish rockfish is a simple yet flavorful meal that delivers freshness and comfort in every bite. It’s perfect for busy evenings when you want something healthy without extra effort.
Full Recipe Card
Ingredients
5 cups fresh spinach
2 (6 ounce) fillets rockfish
10 cherry tomatoes, halved
½ cup vegetable broth
2 tablespoons minced fresh dill
½ teaspoon lemon pepper
¼ teaspoon garlic powder
¼ teaspoon onion powder
Salt and ground black pepper to taste
2 lemon slices
2 onion slices
1 teaspoon butter
Instructions
Preheat oven to 400°F (200°C).
Layer spinach in a 2-quart baking dish.
Place rockfish on top and scatter tomatoes around.
Pour in broth and season with dill, lemon pepper, garlic powder, onion powder, salt, and pepper.
Top each fillet with lemon, onion, and butter.
Cover with foil and bake 20–25 minutes until fish flakes easily.
