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Roasted Cod with Garlic-Lemon Broccoli
Low-CarbGluten-FreeDairy-FreeMuscle MaintenanceHeart HealthyCodBroccolidinnernon-veg

Roasted Cod with Garlic-Lemon Broccoli

20 mins
Easy
4 Servings
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The Story

This healthy Roasted Cod with Garlic-Lemon Broccoli recipe is a clean eating meal option rich in nutrients. Optimized for Low-Carb, Gluten-Free, Dairy-Free, Muscle Maintenance, Heart Healthy and created by certified nutritionist Stewart Lucas, it is designed to fit seamlessly into a health-focused lifestyle.

Quick Summary

This Roasted Cod with Garlic-Lemon Broccoli is the quintessential weeknight dinner. It combines lean, flaky white fish with earthy, charred broccoli in one pan. Ready in under 30 minutes, it provides a high-protein, nutrient-dense meal without the hassle of a complicated cleanup.

A Simple Meal with Depth

There are nights when your energy is low, but your body is craving something vibrant and clean. That is exactly when I turn to this roasted cod. There is something profoundly satisfying about the simplicity of high-quality fish meeting the sharp, bright acidity of fresh lemon and the mellow bite of roasted garlic.

When you slide that pan into the oven, the kitchen begins to fill with that clean, oceanic aroma, cut through by the sharp, savory scent of garlic sizzling in olive oil. It is a humble dish, but when done right, the textures are a study in contrast: the cod becomes butter-soft, flaking at the mere suggestion of a fork, while the broccoli edges turn crispy and golden-brown. It is nourishment in its purest form—no heavy sauces, no complex techniques, just good ingredients doing the work for you.

Ingredients You Will Need

  • 4 cod fillets (6oz each): Look for thick, uniform cuts for even roasting.
  • 1 large head of broccoli: Cut into small, bite-sized florets.
  • 3 tbsp extra virgin olive oil: Use a good quality cold-pressed oil for the best flavor.
  • 3 cloves garlic: Finely minced or smashed.
  • 1 lemon: Sliced into thin, elegant rounds.
  • Seasoning: 1/2 tsp sea salt, 1/4 tsp cracked black pepper, 1/2 tsp red pepper flakes.

Method

  1. Prep the oven: Preheat to 400°F. Ensure your sheet pan is clean and dry.
  2. Initial roast: Toss the broccoli florets with two tablespoons of olive oil, half the garlic, salt, and pepper. Arrange them in a single layer on the pan. Roast for 10 minutes. You want to see the edges start to darken.
  3. Add the fish: Push the broccoli to the edges of the pan. Place your cod fillets in the center. Drizzle the remaining oil and garlic over the fish, then drape the lemon slices directly on top of each fillet.
  4. Finish: Roast for another 10–12 minutes. The fish should be opaque and flake easily when nudged with a fork. If the broccoli needs more color, leave it for an extra two minutes while the fish rests.

Stewart's Culinary Coaching Tips

The biggest mistake I see in home kitchens is crowding the sheet pan. If the broccoli florets are touching too much, they will steam in their own moisture rather than roasting. You want that caramelization for flavor! If your pan looks too full, don't be afraid to pull out a second tray. Also, for the cod, pat it completely dry with a paper towel before adding your oil and seasonings. Removing that surface moisture allows the fish to cook evenly without becoming mushy.

Nutritional Science & Benefits

Cod is an exceptional source of lean protein, low in saturated fat, and rich in essential B vitamins like B12, which supports energy levels and nerve health. Broccoli is a cruciferous vegetable powerhouse; it is packed with fiber for gut health and vitamin C for immune support. When you pair these two, you are getting a meal that is exceptionally satiating without the blood sugar spikes associated with heavier dinners.

Meal Prep & Storage

This dish is fantastic for meal prep because it holds its texture well. If you are cooking ahead, store the fish and broccoli in an airtight glass container for up to three days. When reheating, do not use the microwave if you can help it—it tends to rubberize the fish. Instead, place the fillets and broccoli in a small oven-safe dish and warm them at 300°F for about 8–10 minutes.

Flavor Variations

If you want to shake things up, here are my favorite ways to adjust this base recipe:

Mediterranean Style

Add halved cherry tomatoes and pitted Kalamata olives to the tray when you add the fish.

Herb-Crusted

Mix a teaspoon of dried oregano and a handful of fresh parsley with your olive oil before drizzling.

Protein Swap

This method works beautifully with halibut or Chilean sea bass, though you may need to adjust the roasting time by a minute or two depending on the thickness of the fillet.

Spicy Kick

If you love heat, double the red pepper flakes and add a pinch of smoked paprika to the broccoli for a deeper, earthier profile.

Nutrition Snapshot

NutrientAmount
Protein38g
Fat12g
Carbs8g
Calories310 kcal
Quick Summary Answer
⏱️ 1 min read📅 Updated: July 8, 2026

This healthy Roasted Cod with Garlic-Lemon Broccoli recipe is a clean eating meal option rich in nutrients. Optimized for Low-Carb, Gluten-Free, Dairy-Free, Muscle Maintenance, Heart Healthy and created by certified nutritionist Stewart Lucas, it is designed to fit seamlessly into a health-focused lifestyle.

Key Takeaways

  • Under 10g of net carbohydrates per serving to support ketosis or blood sugar stability.
  • 100% gluten-free ingredients suitable for celiac or gluten-sensitive diets.
  • Vetted recipe compliant with a balanced dairy-free dietary lifestyle.
  • Vetted recipe compliant with a balanced muscle maintenance dietary lifestyle.

Roasted Cod with Garlic-Lemon Broccoli

This healthy Roasted Cod with Garlic-Lemon Broccoli recipe is a clean eating meal option rich in nutrients. Optimized for Low-Carb, Gluten-Free, Dairy-Free, Muscle Maintenance, Heart Healthy and created by certified nutritionist Stewart Lucas, it is designed to fit seamlessly into a health-focused lifestyle.

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CourseDinner
Prep Time10 mins
Cook Time20 mins
Total Time30 mins
Servings4
AuthorStewart Lucas

Macro Nutrition Profile (Per Serving)

Calories16% DV
310 kcal
Protein76% DV
38g
Fat15% DV
12g
Carbs3% DV
8g
Scale Ingredients

Ingredients

Ingredient Substitutions

Original IngredientHealthy Alternative
Salmon/CodSteelhead trout, halibut, or sea bass (baking times may vary)
Asparagus/VegZucchini slices, broccoli florets, or green beans (roast at same temperature)

Instructions

1

Prep the oven: Preheat to 400°F. Ensure your sheet pan is clean and dry.

2

Initial roast: Toss the broccoli florets with two tablespoons of olive oil, half the garlic, salt, and pepper. Arrange them in a single layer on the pan. Roast for 10 minutes. You want to see the edges start to darken.

10:00
3

Add the fish: Push the broccoli to the edges of the pan. Place your cod fillets in the center. Drizzle the remaining oil and garlic over the fish, then drape the lemon slices directly on top of each fillet.

4

Finish: Roast for another 10–12 minutes. The fish should be opaque and flake easily when nudged with a fork. If the broccoli needs more color, leave it for an extra two minutes while the fish rests.

12:00

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Storage & Freezing Tips

  • Refrigerator: Store leftovers in an airtight glass container for up to 2 days.
  • Reheating: Warm gently in a skillet on medium-low heat with a lid to keep the fish tender. Avoid microwaving to prevent rubbery texture.
  • Freezing: We do not recommend freezing cooked fish as it degrades the texture.

Frequently Asked Questions

Can I use frozen cod?

Absolutely. Just be sure to thaw it completely in the refrigerator overnight. Once thawed, pat it very dry with paper towels. Excess water is the enemy of a good roast.

What can I substitute for broccoli?

Asparagus is a wonderful alternative, though it cooks faster—add it at the same time as the fish rather than roasting it beforehand. Cauliflower florets also work perfectly.

How do I know when the fish is perfectly cooked?

The flesh will turn from translucent to opaque. Use a fork to gently press down on the thickest part of the fillet; if it separates into distinct, clean flakes, it is ready to be pulled from the oven.

Can I roast the lemon slices?

Yes, and I highly recommend it! As they roast on the cod, they soften and release their oils, creating a natural sauce that infuses the fish with a bright, citrusy perfume.

Tried this recipe?

Tag @stewartlucas on Instagram and hashtag it #nutriguide!

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Stewart Lucas

Stewart Lucas

Nutritionist & Recipe Developer

Stewart Lucas is a nutritionist and recipe developer representing the NutriGuide team. All recipes, nutritional values, and diet protocols published on this site are designed and audited by certified dietitians and clinical nutrition professionals to guarantee absolute accuracy.

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