Potato, Leek and Cheese Bake Recipe
Potato, leek and cheese bake is a Polish, home-style version of gratin, baked in layers in a single dish. Thinly sliced potatoes soften in a garlicky cream sauce, while leek adds a sweet, oniony note under a deeply browned cheesy crust. Each layer is seasoned separately, so the whole dish turns out creamy yet full-flavoured.
This dish is close to French gratin dauphinois, but with a typically Polish addition of leek and yellow cheese instead of using only cream. It fits perfectly into the winter, potato-based repertoire of Polish home cooking.
This is a bake that uses very simple ingredients but tastes like a bistro dish thanks to the well-seasoned sauce and leek. It’s elegant enough for a dinner with guests, yet simple enough to make from memory on a weeknight. It reheats well, so it works nicely as a two-day meal.
Why this version works
- Very thin, even potato slices make it possible to skip pre-boiling.
- The sauce is deliberately seasoned more strongly so that after baking the potatoes don’t dominate the flavour.
- Layering the leek and cheese guarantees an even amount of extras in every bite.
- Resting after baking stabilises the sauce, so the portions cut like lasagne.
Chef's tips
The most common mistake is an overly salty top and bland interior – taste the sauce before pouring it in; it should be about half a notch saltier than you want the final dish to be., If after 45 minutes the potatoes still offer slight resistance when pierced, give them another 5–10 minutes until the knife slides in smoothly., If the sauce seems very runny right after baking, don’t overbake it – during the 10-minute rest it will thicken noticeably.
How to serve
Serve with a simple green salad with vinaigrette, pickled cucumber or coleslaw so the acidity cuts through the creamy sauce., It works great as a stand-alone dinner dish or as a richer side to roast chicken, pork neck or fish., The next day, pan-fry slices until the bottom is deeply browned and crispy.
Watch out for
- Slices of potato that are too thick may stay hard despite the total baking time.
- If the top is browning too quickly while the potatoes are still firm, cover with foil again.
- Layers that are too tall in a small dish will mean the centre stays undercooked for a long time.
- Don’t stir the bake after taking it out of the oven – you’ll disturb the layers and the sauce, which is still loose, will run.
Substitutions
- You can replace part of the cream with milk, keeping at least 100 ml of cream for richness.
- Leek can be combined with thinly sliced onion to boost the onion aroma.
- Instead of one cheese, use a mix of gouda, cheddar and Emmental for deeper flavour.
- You can swap nutmeg for a pinch of thyme or marjoram.
Ingredients
- potatoes best floury - 800 g
- leek white and light green part - 1 piece
- cheese grated yellow cheese - 120 g
- cream 30% or 18% for soups - 200 ml
- milk - 100 ml
- garlic - 1 clove
- butter - 1 tablespoon
- ground nutmeg - 0.25 teaspoons
- salt
- pepper ground black
Preparation
- Preheat the oven to 190°C (top and bottom heat). Thoroughly grease a roughly 20×25 cm baking dish with butter, including the sides – the bottom should be completely covered with a thin layer of fat, with no bare glass showing.
- Peel the potatoes and slice them into roughly 3 mm slices, ideally on a mandoline. The slices should be even and slightly translucent at the edges – this way they will bake until tender without any pre-boiling.
- Halve the leek lengthwise, rinse thoroughly between the layers to remove any sand and dry well. Slice into thin half-moons so that after baking it is completely soft and just starting to fall apart, with no hard rings.
- Peel the garlic and chop it very finely or press it. In a bowl, mix the cream with the milk, add the garlic, nutmeg, salt and pepper, stir and taste – the sauce should be distinctly salty and aromatic.
- Arrange the first overlapping layer of potatoes on the bottom of the dish, with no gaps. Sprinkle with some of the leek and cheese, then pour over some of the sauce so that a thin layer covers the vegetables and you can see small “puddles” around the edges.
- Repeat the layers: potatoes, leek, cheese, sauce, pressing each layer down lightly with your hand or a spoon, until you use up the ingredients. Finish with a layer of potatoes, pour over the remaining sauce and sprinkle generously with cheese so the top is completely covered.
- Cover the dish with aluminium foil (shiny side facing in), making sure it doesn’t touch the cheese. Bake for 30 minutes, until the sauce is clearly bubbling around the edges and a knife inserted into the top layer of potatoes goes in with slight resistance.
- Remove the foil and bake for another 15–20 minutes. The top should be a deep golden colour, slightly brown in spots, and a thin knife inserted into the centre should pass through all the layers without resistance; if needed, extend the baking time by a few minutes.
- Take the bake out of the oven and leave it uncovered for about 10 minutes. During this time the sauce will thicken, the bubbles will subside, and once portioned, the pieces will hold their shape and not run all over the plate.
Storage
Once chilled, the sauce sets noticeably and the cheesy crust becomes firmer and less stretchy. Reheat in the oven or in a covered pan, adding a tablespoon of milk or cream if needed so the bottom becomes lightly creamy again.
When I know I’ll be back late the next day, I bake this in the evening and just reheat individual portions in a pan – I love that deeply browned, crispy bottom.
