There’s a real appeal to a dinner that goes into one tin and comes out ready to eat, and this chicken tray bake is exactly that kind of meal — chicken thighs roasted alongside vegetables, all cooked together so the flavours mingle as everything bakes.
This is the sort of recipe I turn to on a busy evening when I want a proper, satisfying dinner without a sink full of pans at the end.
It’s also wonderfully flexible, happy to take whatever vegetables you have sitting in the fridge.
Why Cutting Vegetables to Similar Sizes Matters in a Tray Bake
Unlike a dish where everything is braised together in liquid, a tray bake relies on dry oven heat, which means timing differences between ingredients matter much more.
Vegetables cut into roughly similar-sized pieces cook at a comparable rate, so everything finishes roasting at around the same time rather than some pieces burning while others remain undercooked.
This is particularly important when combining vegetables that naturally cook at different speeds, like potatoes and courgettes, where cutting the slower-cooking vegetable smaller helps everything catch up and finish together.

Ingredients for Delia Smith Chicken Tray Bake
- 8 chicken thighs, skin on and bone in
- 500g baby potatoes, halved
- 2 red onions, cut into wedges
- 2 peppers, cut into chunks
- 200g cherry tomatoes
- 3 tbsp olive oil
- 2 garlic cloves, crushed
- 1 tsp dried oregano
- 1 tsp smoked paprika
- Salt and freshly ground black pepper
- Fresh parsley, chopped, to finish
How to Make Delia Smith Chicken Tray Bake — Step by Step
Step 1 — Preheat the Oven
Preheat your oven to 200°C (180°C fan / Gas 6).
Step 2 — Prepare the Tray
Spread the halved potatoes, onion wedges and pepper chunks across a large roasting tray.
Step 3 — Make the Seasoning
Combine the olive oil, garlic, oregano, smoked paprika, salt and pepper in a small bowl.
Step 4 — Coat the Vegetables
Drizzle about half the seasoned oil over the vegetables, tossing to coat evenly.
Step 5 — Add the Chicken
Nestle the chicken thighs among the vegetables, skin-side up.
Step 6 — Season the Chicken
Brush or drizzle the remaining seasoned oil over the chicken thighs.
Step 7 — Roast
Roast for 35–40 minutes.
Step 8 — Add the Tomatoes
Scatter the cherry tomatoes over the tray and return to the oven for a further 10–15 minutes, until the chicken skin is golden and crisp, the juices run clear, and the vegetables are tender.
Step 9 — Finish and Serve
Scatter with fresh parsley before serving straight from the tray.
My Top Tips for the Best Delia Smith Chicken Tray Bake
Cut vegetables to roughly similar sizes. This helps everything cook at a comparable rate, so nothing finishes undercooked or overdone.
Add the cherry tomatoes partway through, not at the start. This stops them collapsing into mush before the rest of the tray has finished cooking.
Don’t overcrowd the tray. Giving everything a bit of space helps it roast properly rather than steam, which gives better colour and texture overall.
Keep the chicken skin-side up throughout. This lets the skin crisp up nicely in the dry oven heat rather than becoming soggy underneath the other ingredients.
Use a large enough tray. If everything is too tightly packed, swap to two trays rather than one overcrowded one.
Serving Suggestions
Serve straight from the tray with crusty bread, or alongside a simple green salad if you’d like something fresh on the side. This is a complete meal in itself, needing very little else.
How to Store Delia Smith Chicken Tray Bake
In the fridge: Store in an airtight container for up to 3 days. Reheat in the oven for the best texture, as the chicken skin can lose its crispness in the microwave.
At room temperature: Not suitable — cool and refrigerate promptly after cooking.
In the freezer: Freezes reasonably well for up to 2 months, though the texture of the vegetables softens on reheating. Defrost fully in the fridge before reheating.

Delia Smith Chicken Tray Bake Recipe
Ingredients
Method
- Preheat oven to 200°C (180°C fan / Gas 6).
- Spread potatoes, onions and peppers across a roasting tray.
- Mix oil, garlic, oregano, paprika, salt and pepper.
- Toss vegetables in half the seasoned oil.
- Nestle chicken among the vegetables, skin-side up, and drizzle with remaining oil.
- Roast for 35–40 minutes.
- Add cherry tomatoes and roast a further 10–15 minutes.
- Scatter with parsley and serve from the tray.
Notes
Frequently Asked Questions About Delia Smith Chicken Tray Bake
Can I use chicken breast instead of thighs?
You can, though thighs are more forgiving and stay juicier over the roasting time, as breast meat can dry out more easily in the hotter, direct heat of a tray bake.
Can I use different vegetables?
Yes, this recipe is very flexible — carrots, parsnips, courgettes or sweet potato all work well, just adjust the cutting size and timing of any slower-cooking vegetables so everything finishes together.
Why is my chicken skin not crispy?
This usually means the tray was overcrowded, causing the chicken to steam rather than roast. Give everything plenty of space, or use a larger tray.
Can I prepare this ahead of time?
Yes, you can chop all the vegetables and season the chicken a few hours ahead, keeping everything covered in the fridge, then simply assemble and roast when you’re ready.

