Budget Batch Lemon Garlic Cod & Green Beans
If you’re looking for a way to stretch your weekly food budget without sacrificing flavour or resorting to bland meals, this Lemon Garlic Baked Cod with Green Beans is about to become your new kitchen hero. I make this at least once a week – it’s become a family favourite, and after testing this recipe five times, I finally got it just right for batch cooking.
Recipe Overview
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Total Time: 30 minutes
- Servings: 4 generous portions
- Difficulty: Easy
Why You’ll Love This Lemon Garlic Baked Cod with Green Beans
- Cost per serving is under £3.50: By buying frozen cod fillets in bulk and using seasonal green beans, this meal keeps your wallet happy. You get a protein-rich dinner that tastes like a restaurant dish without the restaurant price tag.
- One-pan wonder for meal prep: Everything bakes together on a single tray, which means less washing up and more time for yourself. I often double the batch on a Sunday and have lunches ready for three days.
- Reheats beautifully without drying out: The lemon-garlic butter sauce keeps the cod moist even after two days in the fridge. I’ll share my exact reheating method below so you never end up with rubbery fish.
- Naturally gluten-free and low-carb: This dish fits neatly into a balanced diet without any complicated substitutions. The green beans provide fibre and crunch, while the cod delivers lean protein.
- Customisable for varying budgets: Whether you use fresh cod from the fishmonger or frozen fillets from the supermarket, the recipe adapts. I’ve tested both, and the results are consistently delicious.
Ingredients You’ll Need
- 4 cod fillets (about 150g each), fresh or frozen
- 400g green beans, trimmed
- 3 tablespoons unsalted butter, melted
- 4 cloves garlic, minced
- 1 lemon, juiced and zested
- 2 tablespoons olive oil
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon smoked paprika
- ¼ teaspoon chilli flakes (optional, for heat)
- 2 tablespoons fresh parsley, chopped
- 1 tablespoon capers (optional, for extra flavour)
Tip: Buy frozen cod fillets when they’re on offer – they’re often half the price of fresh and work perfectly here. Just thaw them in the fridge overnight before cooking.
How to Make Lemon Garlic Baked Cod with Green Beans
- Preheat the oven to 200°C (180°C fan). While it’s heating, line a large baking dish with aluminium foil. This isn’t just for easy cleaning – the foil helps trap steam, keeping the cod tender and the green beans vibrant.
- Prepare the lemon-garlic butter. In a small mixing bowl, combine the melted butter, minced garlic, lemon juice, lemon zest, smoked paprika, salt, and pepper. Whisk until everything is well incorporated. The aroma of garlic and lemon should hit you immediately – that’s how you know it’s ready.
- Toss the green beans with olive oil. Place the trimmed green beans in the baking dish, drizzle with olive oil, and sprinkle with a pinch of salt. Use your hands to coat them evenly. The beans should look glossy and lightly coated, not dripping.
- Arrange the cod fillets on top of the beans. Pat the cod dry with kitchen paper – this step is crucial for the sauce to cling properly. Place the fillets skin-side down (if they have skin) directly onto the green beans. You’ll hear a slight sizzle if the dish is hot from the oven preheating.
- Pour the lemon-garlic butter over the cod. Spoon the mixture evenly over each fillet, letting it drip down onto the beans below. The sauce should pool slightly around the fish, creating a shallow bath that will keep everything moist during baking.
- Bake uncovered for 18-22 minutes. The cod is done when it flakes easily with a fork and the centre is opaque, not translucent. The green beans should be tender-crisp – they’ll have a bright green colour and yield slightly when pierced with a knife. If you inserted a thermometer, the cod should read 63°C.
- Rest for 2 minutes before serving. Remove the dish from the oven and let it sit on the counter. This resting period allows the juices to redistribute, so your cod stays moist rather than weeping onto the plate. Garnish with fresh parsley and capers if using.
Tips From My Kitchen
- Always pat the cod dry before adding the sauce. Excess moisture on the surface of the fish dilutes the lemon-garlic butter and prevents proper seasoning. I use a few sheets of kitchen paper and press gently – you’ll see the paper absorb any watery patches. This simple step makes a noticeable difference in flavour concentration.
- Don’t overcrowd the baking dish. If you’re doubling the recipe for meal prep, use two separate dishes rather than piling everything into one. Overcrowding creates steam instead of gentle heat, which makes the cod release its juices prematurely and turn mushy. The beans also need space to roast, not boil in their own liquid.
- Use frozen green beans in a pinch, but adjust the timing. Frozen beans release more water during cooking, so blanch them first in boiling water for 60 seconds, then drain thoroughly. This removes excess moisture and helps them keep their texture. Add them to the dish 5 minutes after the cod has started baking.
- Scale the recipe based on your budget. I often use frozen cod from a value brand – it costs about £2.50 for a 400g bag compared to £6 for fresh. The texture is slightly firmer, but the lemon-garlic sauce compensates beautifully. For the green beans, buy loose rather than pre-bagged – they’re usually cheaper and you can pick exactly the amount you need.
- Store leftovers properly to maintain quality. Separate the cod from the green beans before refrigerating. The beans release moisture overnight, which can make the fish soggy. Store them in separate airtight containers, and reheat the cod gently in a low oven (150°C) for 8-10 minutes, or in the microwave at 50% power for 2 minutes. The green beans can be reheated quickly in a hot pan with a splash of water.
- Double the sauce for extra meal prep magic. I always make 1.5 times the lemon-garlic butter mixture. Half goes on the fish before baking, and the remainder I store in a jar in the fridge. A spoonful over reheated cod revitalises the flavour and adds moisture – it’s like having a fresh meal all over again.
Equipment You’ll Need
- 9×13 inch baking dish
- Aluminium foil
- Mixing bowls
- Sharp knife
- Microplane or zester
- Kitchen paper
- Measuring spoons
- Fork for flaking
Delicious Variations to Try
- Spicy Version: Add 1 teaspoon of harissa paste or a finely chopped red chilli to the lemon-garlic butter before pouring it over the cod. For extra heat, sprinkle dried chilli flakes over the finished dish. The spice cuts through the richness of the butter beautifully.
- Vegetarian/Vegan Option: Replace the cod with thick slices of firm tofu or halloumi. For a vegan version, use a plant-based butter alternative and serve with roasted chickpeas for protein. The lemon-garlic marinade works wonderfully with both options.
- Different Protein: Swap the cod for salmon fillets, which have a richer flavour and higher fat content, making them even more forgiving for batch cooking. You could also use haddock or pollock for a more affordable alternative – both cook in the same time and absorb the sauce well.
What to Serve With Lemon Garlic Baked Cod with Green Beans
- Steamed new potatoes tossed in butter and parsley
- A simple side salad with lemon vinaigrette
- Fluffy white rice or quinoa to soak up the sauce
- Crusty bread for mopping up every last drop
- Roasted cherry tomatoes for a pop of sweetness
Still hungry for ideas? You might also love Lemon Parsley Baked Mahi Mahi Recipe, Baked Cod Coconut Lemon Sauce from our sister kitchens.
Frequently Asked Questions
Can I use frozen cod without thawing it first?
You can, but the texture won’t be as good and the cooking time will increase by about 10-12 minutes. If you’re in a rush, place the frozen fillets under cold running water for 10 minutes to speed up thawing. For the best results in meal prep, I always thaw frozen cod overnight in the fridge.
How long does this keep in the fridge for meal prep?
Stored properly in separate airtight containers, the cod stays fresh for up to three days and the green beans for two days. I don’t recommend keeping it longer than that because the fish texture starts to deteriorate. Always reheat only the portion you plan to eat immediately.
Can I freeze the cooked Lemon Garlic Baked Cod?
Yes, but I recommend freezing the cod and green beans separately in freezer-safe bags. The cod will keep for up to two months. To reheat, thaw overnight in the fridge and warm gently in a low oven. The green beans may lose some crunch after freezing, so they’re best eaten fresh if possible.
What if I don’t have a lemon? Can I use bottled lemon juice?
Fresh lemon is always best for this recipe because the zest provides aromatic oils that bottled juice can’t replicate. However, in a pinch, use 2 tablespoons of bottled lemon juice and add a teaspoon of white wine vinegar for acidity. Skip the zest entirely rather than using dried zest, which can be bitter.
Why did my cod turn out dry?
The most common culprit is overcooking. Cod fillets are done when they reach an internal temperature of 63°C and flake easily with a fork. If your oven runs hot, check the fish at 16 minutes instead of 20. Another reason could be not patting the fish dry – surface moisture creates steam that toughens the protein.
Lemon Garlic Baked Cod with Green Beans
A simple, healthy one-pan meal featuring tender cod fillets and vibrant green beans baked in a flavorful lemon-garlic butter sauce. Ready in under 45 minutes, this dish is perfect for a quick weeknight dinner.
Ingredients
Method
- Preheat the oven to 200°C (180°C fan). While it's heating, line a large baking dish with aluminium foil. This isn't just for easy cleaning - the foil helps trap steam, keeping the cod tender and the green beans vibrant.
- Prepare the lemon-garlic butter. In a small mixing bowl, combine the melted butter, minced garlic, lemon juice, lemon zest, smoked paprika, salt, and pepper. Whisk until everything is well incorporated. The aroma of garlic and lemon should hit you immediately - that's how you know it's ready.
- Toss the green beans with olive oil. Place the trimmed green beans in the baking dish, drizzle with olive oil, and sprinkle with a pinch of salt. Use your hands to coat them evenly. The beans should look glossy and lightly coated, not dripping.
- Arrange the cod fillets on top of the beans. Pat the cod dry with kitchen paper - this step is crucial for the sauce to cling properly. Place the fillets skin-side down (if they have skin) directly onto the green beans. You'll hear a slight sizzle if the dish is hot from the oven preheating.
- Pour the lemon-garlic butter over the cod. Spoon the mixture evenly over each fillet, letting it drip down onto the beans below. The sauce should pool slightly around the fish, creating a shallow bath that will keep everything moist during baking.
- Bake uncovered for 18-22 minutes. The cod is done when it flakes easily with a fork and the centre is opaque, not translucent. The green beans should be tender-crisp - they'll have a bright green colour and yield slightly when pierced with a knife. If you inserted a thermometer, the cod should read 63°C.
- Rest for 2 minutes before serving. Remove the dish from the oven and let it sit on the counter. This resting period allows the juices to redistribute, so your cod stays moist rather than weeping onto the plate. Garnish with fresh parsley and capers if using.
Notes
For best results, pat the cod dry before adding the sauce. If using frozen cod, thaw completely and pat dry. The optional chilli flakes and capers add a nice kick and briny depth.
I’d love to hear how you get on with this Lemon Garlic Baked Cod with Green Beans for your own meal prep routine. Drop a comment below and let me know if you tried any of the variations or discovered a new budget-friendly twist – your ideas might just inspire someone else’s weekly menu.
