Sheet Pan Lemon Thyme Cod with Roasted Rutabaga and Kohlrabi
Tender cod fillets baked over roasted rutabaga and sweet kohlrabi with fragrant lemon zest and fresh thyme.
- AIP
- Celiac
- Hashimoto's
- Low-FODMAP
- PCOS
- Anti-inflammatory
- Pregnancy
- Toddlers
- Dairy-free
- Alpha-gal
- Diabetes
- High blood pressure
- Heart health
- Gluten-free
- Crohn’s and colitis
- IBS
- High cholesterol
- Keto
- Low-GI
- Paleo
- Sheet pan
- Gluten-free dairy-free

Ingredients
- 600 g cod fillets, boneless, cut into 4 portions
- 450 g rutabaga, peeled and sliced into 1 cm rounds
- 350 g kohlrabi, peeled and sliced into 1 cm wedges
- 3 tbsp olive oil
- 1 tsp fine salt
- 1 tbsp fresh thyme leaves, finely chopped
- 1 tsp lemon zest, freshly grated
- 1.5 tbsp lemon juice, freshly squeezed
- 2 tbsp fresh flat-leaf parsley, finely chopped
Method
- Preheat the oven to 400°F (200°C). Toss the sliced rutabaga and kohlrabi on a large rimmed baking sheet with 2 tablespoons olive oil, half the chopped thyme, and half the salt.
- Spread the vegetables in a single layer and roast until tender and lightly golden around the edges.25 min timer
- Push the vegetables to the sides of the tray and place the cod fillets in the center. Drizzle the fish with the remaining 1 tablespoon olive oil, lemon juice, lemon zest, remaining thyme, and remaining salt.
- Roast until the cod flakes easily with a fork and reaches an internal temperature of 145°F (63°C).12 min timer
- Scatter fresh flat-leaf parsley over the roasted cod and vegetables before serving.
Why it works
- Autoimmune protocol (AIP): Seasoned purely with thyme, lemon zest, sea salt, and olive oil, avoiding nightshades, seeds, soy, and dairy.
- Hashimoto's thyroiditis: Naturally grain-free and completely free of soy, gluten, and seaweed.
- Pregnant: Features cod, a mild low-mercury fish, prepared with no unpasteurised foods or alcohol.
- Toddler (1–3): Tender roasted root vegetables and soft fish are easy to cut into small, gentle finger foods.
- Kid (4–12): A mild, zesty lemon and herb pan meal with naturally sweet roasted root vegetables.
AIP check: watch for nightshade spices (paprika, chili, cayenne), seed spices (cumin, coriander seed), seed oils and hidden sugar. Gluten gives food ideas, not medical advice: always check labels for allergens and cross-contact.
Cooking for more than one diet?
Add everyone you cook for, with their allergies, diets and ages. Gluten checks this recipe for each of them and tells you what to change for anyone who can’t eat it as written. It’s free.
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This recipe also fits: Celiac recipes, Hashimoto's recipes, Low-FODMAP recipes, PCOS recipes, Anti-inflammatory recipes, Pregnancy recipes, Toddlers recipes, Dairy-free recipes, Alpha-gal recipes, Diabetes recipes, High blood pressure recipes, Heart health recipes, Gluten-free recipes, Crohn’s and colitis recipes, IBS recipes, High cholesterol recipes, Keto recipes, Low-GI recipes, Paleo recipes, Sheet pan recipes, Gluten-free dairy-free recipes.
