Postpartum · Dinner
Creamy Salmon, Leek & Potato Sheet-pan Bake
Salmon roasted over creamy leeks and potatoes in one dish - a DHA dinner with almost nothing to wash up afterwards.
A quiet, oven-does-it dinner where leeks and potatoes soften in a mustardy cream before the salmon joins for the final stretch. It fits the early postpartum weeks because the sequence is forgiving: long unattended stretches, no precise timing to hold in a tired head, and a result that feels far more looked-after than the effort suggests.

Per serving (approx.): 620 calories · 36 g protein · 42 g carbs · 34 g fat · 6 g fiber
Ingredients
- 2salmon fillets (140 g each)
- 500 gbaby potatoes, halved
- 2leeks, sliced
- 2 tbspolive oil
- 150 mlsingle cream
- 100 mlvegetable stock
- 1 tbspDijon mustard
- 1lemon, half zested and juiced, half in wedges
- 10 gdill, chopped
Open this recipe in the interactive app to scale servings, switch to oz and cups, and tick ingredients off as you cook.
Method
- Roast. Toss potatoes and leeks with the oil in a baking dish; roast at 400F (200C) for 25 minutes until softening.
- Cream. Whisk cream, stock, mustard, lemon zest and juice; pour over, nestle in the seasoned salmon, and roast 14-16 minutes more until the fish flakes.
- Finish. Scatter dill and serve with lemon wedges - straight from the dish, obviously.
Is this safe while breastfeeding?
Yes - salmon is one of the fish worth actively keeping on the menu while breastfeeding, not just tolerated. It counts as oily fish, so the rhythm to know is 1-2 portions a week, with a maximum of 2. Nothing else on the tray raises a flag: the cream is pasteurized, the mustard and leeks are unremarkable in the best way, and the fish roasts through to flaking.
Substitutions & allergens
- Swap the single cream for an unsweetened oat cream - removes dairy; the mustard keeps the sauce lively either way.
- Swap salmon for trout fillets - a like-for-like oily fish, so the omega-3 fit stays intact.
- If fish is off the table entirely, chicken thighs roast well in the same cream - removes fish, but the omega-3 story is the reason this dish exists, so it becomes a different dinner.
- Swap dill for parsley or chives, and leeks for onion and fennel if that is what the fridge offers.
Storage & reheating
Cool leftovers and refrigerate within 1-2 hours; eat within 48 hours, reheated until steaming hot all the way through and only once, per FSA chilling guidance. If that window will not happen, freeze portions on the day of cooking - the cream may loosen a little on thawing, and stirring as it reheats brings it mostly back. Defrost in the fridge, never on the counter, and eat within 24 hours.
Checked against the public guidance we follow - see our sources & editorial standards.
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