Tray-baked chicken and potatoes
On this tray, size is the timer. The potatoes are cut to half the size of the chicken pieces on purpose, because dense potato takes far longer to cook through than meat of the same size. Get the knife work right and everything finishes in 22 minutes, with no par-boiling and no pieces pulled out early.
- 30 minTotal time
- 2Servings
- 520kcal / serving
- 38 gProtein
That makes it a proper roast-style dinner on a weeknight. It is gluten-free, dairy-free and high in protein, and once you understand the sizing rule you can adapt it to almost any vegetable in the drawer.
The science: why this works
- Heat travels into food slowly, by conduction, and the time it takes rises with roughly the square of the thickness. Double the size of a cube and it takes about four times as long to cook through. That is why 1.5 cm potato and 3 cm chicken finish together.
- Potato needs more than chicken. The meat is safe at 74°C (165°F), but potato only turns fluffy once its starch has swollen and the glue between its cells has softened, which needs temperatures close to boiling. Smaller cubes get there in the same time.
- Dark metal trays absorb more of the oven's radiant heat than shiny or glass ones, so they brown the undersides faster. A heavy, dark sheet pan gives the crispest bottoms.
- Onion wedges cut through the root end stay joined at the base, so their layers roast and caramelize at the edges instead of separating into thin strips that burn.
- Oil is the bridge between hot metal and food. A thin, even coating fills the tiny gaps between each cube and the tray, so heat flows straight in and browning is even rather than patchy.
Why the oven runs so hot
At 220°C (425°F), the surface of the potatoes dries out and browns fast. This high heat creates crisp, golden edges through the Maillard reaction, while the inside turns soft and fluffy. Put the tray in only once the oven has fully reached temperature.
Learn: Preheat pans and ovens fully →Why everything is spread in one layer
Food that is piled up traps steam, so it turns soft and pale instead of browning. A single layer lets hot air reach every piece and moisture escape, which gives crisp edges. Leave a little space between pieces, and use a second tray if needed.
Learn: Brown food in batches →Why the lemon goes on last
Heat dulls the fresh, sharp flavor of lemon juice. Squeezing it over the hot tray at the end keeps that brightness and lifts the rich chicken and potatoes. Fresh acid is a quick fix for any dish that tastes flat or heavy.
Learn: Add acid at the end →Tray-baked chicken and potatoes
30 minutes · 2 servings · British · Dinner
Ingredients
Makes 2 servings
- 350 gboneless chicken thigh, cut into 3 cm pieces
- 400 gpotato, cut into 1.5 cm cubes
- 1carrot, sliced
- 1onion, cut into wedges
- 1 tsppaprika
- 2 tbspolive oil
- ½lemon
- Salt
- Black pepper
Method
Tips for the best result
- Put the empty tray in the oven while it heats, then carefully tip the oiled ingredients onto it. The sizzle gives the bottoms a head start.
- Pat the potato cubes dry with a towel after cutting. Surface water slows crisping.
- Leave the potato skins on. Thin skins crisp nicely and save you peeling.
- Use a thin metal spatula when you turn everything so the browned crust stays on the potato, not stuck to the tray.
- In a fan or convection oven, set it about 20°C (25°F) lower, to 200°C (400°F), and check a few minutes early.
- Chef Fizz's rule: if it doesn't sizzle when it hits the tray, the tray isn't hot enough.
Mistakes to avoid
- Using a glass or ceramic baking dish — it heats slowly and the bottoms stay pale. Use a metal sheet pan.
- Covering the tray with foil to keep things juicy — it traps steam and the potatoes go soft. Roast uncovered.
- Cutting the onion wedges without any root attached — they fall apart into strips that burn. Leave a little root on each wedge.
- Prying stuck potatoes off the second the tray comes out — the crust tears. Leave them 1–2 minutes and they release on their own.
Variations and swaps
- Use smoked paprika with 1/2 tsp garlic powder for a deeper, barbecue-like tray.
- Add broccoli florets or bell pepper chunks for the last 10 minutes.
- Use chicken breast instead of thighs, cut into 4 cm pieces so it does not dry out.
- Scatter a handful of olives and cherry tomatoes over the tray for the final 8 minutes.
- Serve with plain yogurt or garlic mayo for dipping.
- Swap the paprika for cumin or dried oregano for a different flavor.
Storing and reheating
Refrigerate leftovers within 2 hours of cooking (1 hour if it is above 32°C/90°F) in a sealed container at 4°C (40°F) or below, and eat within 3–4 days. An air fryer brings the potatoes back best: 6–8 minutes at 190°C (375°F), shaking once, until the chicken reaches 74°C (165°F). Avoid the microwave for the potatoes, which turns them soft and slightly gluey. If it is all you have, finish them in a hot dry frying pan for a minute. The chicken freezes well for 2–3 months at −18°C (0°F), but roasted potatoes turn grainy when thawed, so eat those fresh. Thaw in the fridge.
Tray-baked chicken and potatoes: questions
Do I need to boil the potatoes first?
No. Cut into 1.5 cm cubes, the potatoes cook through in the oven in the same 22 minutes as the chicken.
Can I use bone-in thighs?
Yes, but they need about 35–40 minutes at 220°C (425°F). Cut the potatoes into larger 3 cm chunks so both finish together, and check the meat near the bone reaches 74°C (165°F).
What temperature for a fan or convection oven?
About 200°C (400°F), roughly 20°C (25°F) lower than a conventional oven. Start checking a few minutes early, as fan ovens brown faster.
Should I line the tray with parchment or foil?
Parchment is the better choice for easy cleanup and less sticking, and it still lets the potatoes brown. Foil works but potatoes stick to it more. A bare, well-oiled metal tray gives the crispest bottoms.
How do I know the chicken is cooked?
The thickest piece should reach 74°C (165°F) on a food thermometer. Without one, cut it open and check that no pink remains and the juices run clear.
Is it gluten-free?
Yes. Chicken, vegetables, olive oil, paprika, lemon, salt and pepper are all naturally gluten-free and dairy-free.
How do you get potatoes crispy in the oven?
Use a hot oven, cut the potatoes small and spread them in one layer with enough oil. Turning them once halfway helps the edges brown evenly.
How long does chicken take to bake at 220°C?
Small pieces of chicken thigh cooked at 220°C (425°F) take about 22 minutes. Always check the largest piece reaches 165°F (74°C).
Do you need to wash chicken first?
No, washing raw chicken can spread germs around the sink. Cook it fully instead, and wash your hands and tools after touching it.
