Baked Cod with Butternut Squash

Featured in: Cozy Weeknight Meals

This dish features delicate cod fillets baked atop sweet roasted butternut squash and tender spinach, all embraced by a rich tomato-herb sauce. The squash is first roasted to caramelize its natural sweetness, while the spinach wilts gently beneath a savory blend of tomatoes, garlic, and herbs. Baking ensures the fish remains moist and flaky, absorbing the vibrant flavors around it. Ideal for a comforting yet light main course, it suits both weeknight dinners and special gatherings.

Updated on Mon, 17 Nov 2025 09:29:00 GMT
Image of Baked Cod with Butternut Squash and a rich, aromatic tomato-herb sauce bubbling. Save
Image of Baked Cod with Butternut Squash and a rich, aromatic tomato-herb sauce bubbling. | blipbite.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.

The first time I made this dish was for a family dinner when we wanted something light but comforting. It quickly became a favorite because everyone loved the delicate cod with the sweet squash and savory sauce.

Ingredients

  • Cod fillets: 4 fillets (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)
  • Medium yellow onion: 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: ½ tsp (optional)
  • Sea salt: ½ tsp, plus more to taste
  • Freshly ground black pepper: ¼ tsp, plus more to taste
  • Sugar or maple syrup: 1 tsp (optional, 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 oven and squash:
Preheat oven to 200°C (400°F). Lightly grease a large ovenproof dish. Toss squash cubes with 1 tbsp olive oil, a pinch of salt, and pepper. Spread evenly in baking dish. Roast for 15 minutes until starting to soften.
Sauté aromatics:
While squash roasts, heat 1 tbsp olive oil in a skillet over medium heat. Sauté onion for 3 minutes until translucent. Add garlic and cook 1 minute more.
Make tomato-herb sauce:
Stir in tomato paste, cook 1 minute. Add crushed tomatoes, oregano, thyme, smoked paprika (if using), salt, pepper, and sugar or maple syrup. Simmer 5 minutes for flavor.
Assemble dish:
Remove squash from oven. Scatter spinach over squash, then pour sauce evenly over vegetables.
Add cod:
Nestle cod fillets on top. Season fish lightly with salt and pepper. Cover loosely with foil.
Bake:
Bake 15 to 18 minutes or until cod is opaque and flakes easily with fork.
Finish and serve:
Remove foil, sprinkle with fresh parsley. Serve with lemon wedges and extra pepper.
Freshly baked Baked Cod, served with vibrant roasted butternut squash and garnished with parsley. Save
Freshly baked Baked Cod, served with vibrant roasted butternut squash and garnished with parsley. | blipbite.com

This cod bake is often requested at family gatherings. We love serving it right from the baking dish, letting everyone help themselves and add lemon as they please.

Required Tools

Large ovenproof baking dish, skillet, chefs knife, cutting board, and foil will help make prep and cooking simple.

Allergen Information

Contains fish. Gluten-free as written. Remember to confirm packaged products for hidden allergens.

Nutritional Information (per serving)

Calories: 295 Protein: 34 g Carbohydrates: 23 g Total Fat: 7 g

A delicious, healthy Baked Cod recipe featuring flaky fish and tender vegetables for dinner. Save
A delicious, healthy Baked Cod recipe featuring flaky fish and tender vegetables for dinner. | blipbite.com

Serve immediately for best texture or store leftovers for an easy lunch. This dish is sure to impress both guests and family.

Kitchen Guide

Can I substitute cod with other fish?

Yes, similar white fish like haddock, pollock, or halibut work well and maintain the delicate texture.

How do I ensure the cod stays moist during baking?

Cover the baking dish loosely with foil to trap steam, preventing the fish from drying out.

What is the best way to roast butternut squash evenly?

Cut the squash into uniform cubes and toss with olive oil and seasoning before roasting at 200°C (400°F) for about 15 minutes.

Can I add heat or spice to the tomato-herb sauce?

Absolutely! Adding a pinch of chili flakes or smoked paprika will introduce gentle warmth and depth.

Are there gluten-free considerations for this dish?

All ingredients used are naturally gluten-free, but always check labels on processed items like tomato paste.

What sides complement this baked cod and vegetable dish?

Quinoa, brown rice, or gluten-free crusty bread make excellent accompaniments to soak up the sauce.

Baked Cod with Butternut Squash

Cod and butternut squash baked with spinach in a vibrant tomato-herb sauce, full of wholesome flavors.

Prep duration
20 min
Heat time
35 min
Complete duration
55 min
Created by Megan Lewis


Complexity Easy

Heritage Mediterranean-Inspired

Output 4 Portions

Nutrition Guidelines No Dairy, No Gluten, Carb-Conscious

Components

Fish & Vegetables

01 4 skinless, boneless cod fillets (5 oz each)
02 1 lb peeled butternut squash, 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 for seasoning
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

Phase 01

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

Phase 02

Roast butternut squash: Toss cubed butternut squash with 1 tablespoon olive oil, pinch of salt, and pepper; spread evenly in the baking dish. Roast for 15 minutes until slightly softened.

Phase 03

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

Phase 04

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

Phase 05

Assemble vegetables and sauce: Remove roasted squash from oven. Scatter fresh spinach evenly over the squash, then pour tomato-herb sauce on top.

Phase 06

Add cod fillets: Nestle cod fillets on top of spinach and sauce. Lightly season with salt and freshly cracked black pepper. Cover loosely with foil.

Phase 07

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

Phase 08

Garnish and serve: Remove foil, sprinkle with fresh parsley, and serve immediately with lemon wedges.

Tools needed

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

Allergy Details

Review ingredients carefully for potential allergens and seek professional medical guidance if uncertain.
  • Contains fish; gluten-free as prepared. Verify all ingredient labels for allergens, especially tomato paste.

Nutrient breakdown (per portion)

Values shown are estimates and shouldn't replace professional medical consultation.
  • Energy: 295
  • Fats: 7 g
  • Carbohydrates: 23 g
  • Proteins: 34 g