Baked Cod Butternut Spinach

Featured in: Fresh & Fast Meals

This dish features tender cod fillets baked on a bed of roasted butternut squash and wilted spinach, bathed in a flavorful tomato-herb sauce. The preparation involves roasting the squash until soft, sautéing onion and garlic to create a rich sauce infused with oregano, thyme, and smoked paprika. The fish is then gently baked atop the vegetables, resulting in a wholesome, aromatic meal. It’s easy to prepare and ideal for nourishing weeknight dinners or casual entertaining, offering balanced flavors and a comforting Mediterranean-inspired profile.

Updated on Mon, 17 Nov 2025 14:16:00 GMT
Baked Cod with Butternut Squash and rich tomato sauce, a vibrant, wholesome meal suggestion. Save
Baked Cod with Butternut Squash and rich tomato sauce, a vibrant, wholesome meal suggestion. | frizplo.com

Tender cod fillets baked atop sweet roasted butternut squash and wilted spinach, all nestled in a vibrant tomato-herb sauce. A wholesome, flavorful meal perfect for weeknights or entertaining.

I first made this dish on a busy weeknight when I craved something nutritious but effortless. The blend of sweet squash, mellow cod, and zesty tomato sauce instantly made it a family favorite.

Ingredients

  • Cod fillets: 4 pieces, about 150 g (5 oz) each, skinless and boneless
  • Butternut squash: 500 g (1 lb), peeled and cut into 1.5 cm (½-inch) cubes
  • Fresh baby spinach: 120 g (4 cups)
  • Yellow onion: 1 medium, finely chopped
  • Garlic cloves: 2, minced
  • Canned crushed tomatoes: 400 g (14 oz)
  • Tomato paste: 2 tbsp
  • Olive oil: 2 tbsp, divided
  • Dried oregano: 1 tsp
  • Dried thyme: 1 tsp
  • Smoked paprika (optional): ½ tsp
  • Sea salt: ½ tsp, plus more to taste
  • Freshly ground black pepper: ¼ tsp
  • Sugar or maple syrup (optional): 1 tsp, to balance acidity
  • Fresh parsley: 2 tbsp, chopped (plus extra for garnish)
  • Lemon wedges: For serving
  • Freshly cracked black pepper: For serving

Instructions

Prepare the baking dish:
Preheat oven to 200°C (400°F). Lightly grease a large ovenproof dish.
Roast squash:
Toss butternut squash cubes with 1 tbsp olive oil, a pinch of salt, and pepper. Spread in the baking dish. Roast for 15 minutes, until slightly softened.
Sauté aromatics:
Heat 1 tbsp olive oil in a skillet on medium. Sauté onion for 3 minutes until translucent. Add garlic, cook for 1 minute more.
Create tomato-herb sauce:
Stir in tomato paste, cook for 1 minute. Add crushed tomatoes, oregano, thyme, smoked paprika, salt, pepper, and sugar or maple syrup if using. Simmer 5 minutes for flavor.
Layer vegetables and sauce:
Remove squash from oven. Scatter spinach over squash, pour tomato-herb sauce evenly.
Add cod fillets:
Nestle cod on top, season fish lightly with salt and pepper. Cover dish loosely with foil.
Bake:
Bake 15 to 18 minutes, until cod is opaque and flakes with a fork.
Finish and serve:
Remove foil, sprinkle fresh parsley, serve with lemon wedges.
Golden-baked cod fillets rest on a bed of roasted squash in this flavorful recipe. Save
Golden-baked cod fillets rest on a bed of roasted squash in this flavorful recipe. | frizplo.com

This recipe quickly became a hit at our dinner table. My children love helping sprinkle parsley right before serving, and it's a meal even picky eaters request again.

Required Tools

Large ovenproof baking dish, skillet, chefs knife, cutting board, foil

Allergen Information

Contains fish. Gluten-free as written. Check all packaged products (especially tomato paste) for potential allergens.

Nutritional Information

Calories: 295, Total Fat: 7 g, Carbohydrates: 23 g, Protein: 34 g (per serving)

Vibrant image shows flaky baked cod with squash and spinach in a delicious herb-tomato sauce. Save
Vibrant image shows flaky baked cod with squash and spinach in a delicious herb-tomato sauce. | frizplo.com

Enjoy this vibrant Mediterranean-inspired cod bake any night of the week. The balance of sweet squash and savory tomato sauce makes every bite satisfying.

Recipe FAQ

Can I substitute other fish for cod?

Yes, haddock, pollock, or halibut make excellent alternatives with similar texture and flavor.

How can I add a spicy kick to this dish?

A pinch of chili flakes added to the tomato-herb sauce enhances the heat while maintaining balance.

Is this suitable for a gluten-free diet?

Absolutely; the dish contains no gluten ingredients as prepared.

What side dishes pair well with this entree?

Quinoa, brown rice, or crusty gluten-free bread complement the flavors and offer satisfying textures.

How do I know when the cod is fully cooked?

It should become opaque and flake easily with a fork when baked through.

Baked Cod Butternut Spinach

Tender cod atop roasted butternut squash and spinach with a rich tomato-herb sauce.

Prep duration
20 min
Time to cook
35 min
Complete duration
55 min
Created by Madison Young

Classification Fresh & Fast Meals

Complexity Level Easy

Cultural Origin Mediterranean-Inspired

Output 4 Portion Count

Dietary requirements No Dairy, No Gluten, Low-Carbohydrate

Components

Fish & Vegetables

01 4 skinless, boneless cod fillets, approximately 5 oz each
02 1 lb butternut squash, peeled and cut into ½-inch cubes
03 4 cups fresh baby spinach
04 1 medium yellow onion, finely chopped
05 2 garlic cloves, minced

Tomato-Herb Sauce

01 14 oz canned crushed tomatoes
02 2 tbsp tomato paste
03 2 tbsp olive oil
04 1 tsp dried oregano
05 1 tsp dried thyme
06 ½ tsp smoked paprika (optional)
07 ½ tsp sea salt, plus additional to taste
08 ¼ tsp freshly ground black pepper
09 1 tsp sugar or maple syrup (optional)
10 2 tbsp fresh parsley, chopped, plus extra for garnish

For Serving

01 Lemon wedges
02 Freshly cracked black pepper

Directions

Step 01

Preheat and Prepare Squash: Preheat oven to 400°F. Lightly grease a large ovenproof baking dish. Toss butternut squash with 1 tbsp olive oil, salt, and pepper. Spread evenly in the dish and roast for 15 minutes until just tender.

Step 02

Sauté Aromatics: Heat 1 tbsp olive oil in a skillet over medium heat. Sauté chopped onion for 3 to 4 minutes until translucent. Add minced garlic and cook for an additional minute.

Step 03

Prepare Tomato-Herb Sauce: Stir in tomato paste and cook for 1 minute. Add crushed tomatoes, oregano, thyme, smoked paprika (if using), salt, pepper, and sugar or maple syrup (if using). Simmer for 5 minutes to develop flavors.

Step 04

Assemble Layers: Remove roasted squash from oven. Evenly scatter fresh spinach over the squash. Pour tomato-herb sauce over vegetables.

Step 05

Add Cod and Bake: Nestle cod fillets on top of the sauce and vegetables. Season fillets lightly with salt and pepper. Cover loosely with foil and bake for 15 to 18 minutes until cod flakes easily.

Step 06

Finish and Serve: Remove foil, sprinkle with fresh parsley, and serve alongside lemon wedges with freshly cracked black pepper to taste.

Necessary tools

  • Large ovenproof baking dish
  • Skillet
  • Chef's knife
  • Cutting board
  • Aluminum foil

Allergy details

Review each component for potential allergens and seek professional healthcare advice if you're uncertain.
  • Contains fish
  • Gluten-free as prepared; verify processed ingredients for allergens

Nutritional breakdown (per portion)

These values are provided as estimates only and shouldn't replace professional medical guidance.
  • Energy Content: 295
  • Fats: 7 g
  • Carbohydrates: 23 g
  • Proteins: 34 g