Baked Cod Butternut Squash

Featured in: Quick Family Meals

This dish features tender, baked cod fillets resting on a bed of sweet roasted butternut squash and wilted spinach. The vibrant tomato-herb sauce adds depth with oregano, thyme, and a hint of smokiness. Preparation is straightforward—roasting squash first, simmering the sauce, then combining all in the oven for a wholesome meal. Garnished with fresh parsley and lemon wedges, it offers balanced flavors and satisfying textures ideal for a nutritious dinner.

Updated on Mon, 17 Nov 2025 14:23:00 GMT
Golden-brown baked cod with butternut squash and spinach, all in a rich tomato-herb sauce. Pin this
Golden-brown baked cod with butternut squash and spinach, all in a rich tomato-herb sauce. | recipeshood.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 for a casual family dinner when we all craved something warm and nourishing but wanted to stay light. The combination of fragrant sauce and sweet squash made everyone ask for seconds.

Ingredients

  • Cod fillets: 4 pieces (about 150 g or 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
  • Dried oregano: 1 tsp
  • Dried thyme: 1 tsp
  • Smoked paprika (optional): ½ tsp
  • Sea salt: ½ tsp, plus more to taste
  • Black pepper: ¼ tsp, freshly ground
  • 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

Preheat oven:
Set oven to 200°C (400°F) and lightly grease a large ovenproof dish.
Prepare and roast squash:
Toss butternut squash cubes with 1 tbsp olive oil, a pinch of salt, and pepper. Spread evenly in the baking dish. Roast for 15 minutes until just starting to soften.
Sauté aromatics:
Heat 1 tbsp olive oil in a skillet over medium heat. Sauté onion for 3 minutes until translucent, then add garlic and cook for 1 minute.
Make tomato-herb sauce:
Add tomato paste and cook for 1 minute. Stir in crushed tomatoes, oregano, thyme, smoked paprika, salt, pepper, and sugar or maple syrup if using. Simmer for 5 minutes.
Layer vegetables:
Remove squash from oven. Scatter spinach over squash and pour tomato-herb sauce evenly on top.
Add cod:
Nestle cod fillets on top, seasoning fish lightly with salt and pepper. Cover dish loosely with foil.
Bake:
Bake 15–18 minutes, until cod is opaque and flakes easily with a fork.
Finish and serve:
Remove foil, sprinkle with fresh parsley. Serve with lemon wedges and extra pepper.
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Everyone in our house loves the vibrant colors and comforting aroma of this meal coming out of the oven. It's become our go-to when we need both warmth and a splash of brightness at dinner.

Serving Suggestions

This dish pairs beautifully with quinoa, brown rice, or a crusty gluten-free bread for soaking up extra sauce.

Allergen Information

This recipe is gluten-free as written. Always check packaged products, especially tomato paste, for potential allergen warnings.

Nutrition Facts

Per serving: 295 calories, 7 g fat, 23 g carbohydrates, 34 g protein.

Flaky, tender baked cod nestled with roasted squash and a vibrant tomato sauce in this recipe. Pin this
Flaky, tender baked cod nestled with roasted squash and a vibrant tomato sauce in this recipe. | recipeshood.com

This baked cod is sure to become a staple for any night you crave a flavorful, healthy meal that's easy to prepare. Bring it to the table hot and watch everyone dig in!

Frequently Asked Recipe Questions

How do I ensure the cod stays moist while baking?

Cover the baking dish loosely with foil to trap steam and prevent drying. Baking until the fish flakes easily ensures tenderness.

Can I use a different fish than cod?

Yes, mild white fish like haddock, pollock, or halibut work well as alternatives and retain similar texture and flavor balance.

What is the best way to roast butternut squash evenly?

Cut squash into uniform cubes and toss with olive oil, salt, and pepper before spreading in a single layer for even roasting and caramelization.

How can I add a little heat to this dish?

Incorporate a pinch of chili flakes into the tomato-herb sauce or sprinkle them over the finished dish for gentle warmth without overpowering flavors.

Is this dish suitable for gluten-free diets?

Yes, the ingredients are naturally gluten-free, but verify any canned products like tomato paste to avoid hidden gluten.

Baked Cod Butternut Squash

Tender cod layered on roasted butternut squash and spinach, bathed in a rich tomato-herb sauce.

Prep Duration
20 min
Time to Cook
35 min
Overall Time
55 min
Created by Julia Harris

Meal Type Quick Family Meals

Level of Challenge Easy

Cuisine Type Mediterranean-Inspired

Servings Made 4 Number of Portions

Dietary Details No Dairy Contained, Contains No Gluten, Reduced-Carb

What You'll Need

Fish & Vegetables

01 4 skinless, boneless cod fillets (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 more 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

Method

Step 01

Prepare oven and baking dish: Preheat oven to 400°F. Lightly grease a large ovenproof baking dish.

Step 02

Roast butternut squash: Toss the squash cubes with 1 tbsp olive oil, pinch of salt, and pepper. Spread evenly in the prepared dish and roast for 15 minutes until beginning to soften.

Step 03

Sauté aromatics: Heat 1 tbsp olive oil in a skillet over medium heat. Cook the onion until translucent, about 3 to 4 minutes. Add garlic and sauté for 1 additional minute.

Step 04

Prepare tomato-herb sauce: In the skillet, 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 desired. Simmer for 5 minutes.

Step 05

Assemble vegetables and sauce: Remove the squash from the oven. Spread the spinach evenly over the squash, then pour the tomato-herb sauce over the vegetables.

Step 06

Add cod fillets and season: Nestle cod fillets atop the vegetables. Lightly season with salt and pepper. Cover loosely with foil.

Step 07

Bake until fish is cooked: Bake for 15 to 18 minutes until cod is opaque and flakes easily with a fork.

Step 08

Garnish and serve: Remove foil, sprinkle with fresh parsley, and serve with lemon wedges and freshly cracked black pepper.

Kitchen Tools Needed

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

Allergen Details

Review every ingredient for allergens and reach out to a professional if you're unsure.
  • Contains fish
  • Gluten-free as prepared; verify packaged ingredient allergens

Nutrition Details (per portion)

Nutrition info is for reference purposes only and isn't medical advice.
  • Energy (Calories): 295
  • Fats: 7 g
  • Carbohydrates: 23 g
  • Proteins: 34 g