Piri piri chicken and sweet potato is a one-pan dinner of chili-marinated chicken thighs roasted alongside sweet potatoes until tender and browned. Piri-piri, also called peri-peri, is associated with Portuguese-African cooking and has many regional and family variations; here, a bright lemon, garlic, and chili sauce brings heat and tang to the sweet, caramelized vegetables.
Ingredients
- 4 bone-in, skin-on chicken thighs, about 2 lb (900 g) total
- 2 medium sweet potatoes, about 2 lb (900 g) total
- 2–4 African bird’s eye chilies, about 5–10 g, stems removed; leave the seeds in for more heat
- 3 garlic cloves, about 9 g, peeled
- 1 medium lemon, about 100 g; use 2 tbsp (30 ml) juice and 1 tsp (2 g) finely grated zest
- 2 tbsp (30 ml) red wine vinegar
- ¼ cup (60 ml) olive oil for the sauce
- 1 tsp (2 g) smoked paprika
- 1 tsp (1 g) dried oregano
- ½ tsp (3 g) fine salt for the sauce
- ¼ tsp (0.5 g) black pepper for the sauce
- 1 tbsp (15 ml) olive oil for the sweet potatoes
- ½ tsp (3 g) fine salt for the sweet potatoes
- ¼ tsp (0.5 g) black pepper for the sweet potatoes
- 2 tbsp (8 g) chopped fresh parsley, optional, for serving
Instructions
- Make the sauce. Put the chilies, garlic, lemon juice and zest, vinegar, ¼ cup olive oil, smoked paprika, oregano, ½ teaspoon salt, and ¼ teaspoon pepper in a small blender or food processor. Blend until the garlic and chilies are finely chopped and the mixture looks like a loose, textured sauce. If you do not have a blender, mince the garlic and chilies very finely and whisk everything together. Taste a little and adjust the chili to suit your preference.
- Set aside sauce for serving, then marinate the chicken. Spoon 2 tablespoons of the sauce into a clean covered container and refrigerate it; this portion will be served with the cooked meal, so do not let it touch raw chicken. Put the thighs in a bowl or resealable bag and coat them with the remaining sauce, including some under the skin if it lifts easily. Cover and refrigerate for 30 minutes. If you need to prepare ahead, the chicken can marinate for up to 8 hours in the refrigerator.
- Heat the oven and prepare the vegetables. About 15 minutes before the chicken is ready to roast, heat the oven to 425°F (220°C). Scrub or peel the sweet potatoes, as you prefer, and cut them into roughly 1-inch (2.5 cm) chunks so they cook evenly. Toss them with 1 tablespoon olive oil, ½ teaspoon salt, and ¼ teaspoon pepper. Spread them in a single layer in a large rimmed baking sheet or roasting pan, leaving room to add the chicken.
- Give the sweet potatoes a head start. Roast the potatoes for 15 minutes. This helps them soften before the chicken is added, while the exposed edges begin to brown. Take care when opening the oven, and keep the pan level so the oil stays on the vegetables.
- Add the chicken and roast. Move the sweet potatoes toward the edges of the pan and place the thighs in the middle, skin side up. Scrape any marinade remaining in the bowl over the chicken, but avoid pouring a deep pool of liquid onto the vegetables. Roast for 35–40 minutes, until the chicken skin is browned, the potatoes are tender when pierced with a fork, and the thickest part of each thigh reaches 165°F (74°C) on an instant-read thermometer without touching bone. That is the USDA FSIS safe minimum internal temperature for poultry. If the chicken reaches temperature before the potatoes are tender, transfer the thighs to a clean plate and return the potatoes to the oven until ready.
- Rest and serve. Let the chicken rest for 5 minutes on the pan or a clean platter. Spoon the reserved sauce over the chicken or serve it on the side, and scatter parsley over the potatoes if using. Serve hot, with the pan juices spooned over the vegetables.
Tips
- Control the heat thoughtfully. Bird’s eye chilies vary in size and strength. Start with two, remove the seeds and pale ribs for a milder sauce, or use four with the seeds for a hotter version. Taste the blended sauce before it touches the chicken; adding heat is easy, but removing it is not.
- Cut the potatoes evenly. Pieces close to 1 inch (2.5 cm) cook at a similar rate. Small pieces may become very soft by the time the thighs are done, while oversized chunks can remain firm in the middle. Turn the potatoes once when you add the chicken if you want more browned sides.
- Keep raw-chicken tools separate. Use a clean spoon to reserve the finishing sauce before marinating. Wash your hands, bowl, and any utensils that have touched raw chicken, and never brush cooked chicken with leftover raw marinade.
- Use a thermometer rather than color alone. Thigh meat can stay slightly pink near the bone even when safely cooked, and browned skin does not prove the center is ready. Check each thigh in its thickest area, avoiding the bone, and return it to the oven if it has not reached 165°F (74°C).
Serving Suggestions
The chicken and sweet potatoes make a filling meal on their own, especially when the pan juices and extra piri-piri sauce are spooned over the top. Add a crisp green salad with a simple lemon dressing to balance the rich chicken skin and sweet roasted vegetables. Steamed green beans, broccoli, or sautéed greens also work well, and their mild flavor gives the chili sauce room to stand out.
For a more substantial plate, serve the traybake with rice, couscous, or crusty bread to catch the lemony juices. If the sauce is quite hot, offer plain yogurt or a mild yogurt-and-lemon dip at the table; it cools the sensation of the chili without changing the seasoning of the chicken. A few lemon wedges are useful for anyone who wants a brighter finish.
Variations
Use a practical chili substitute. African bird’s eye chilies can be difficult to find. Replace them with one small red serrano or red jalapeño, then add a pinch of crushed red pepper if you want more heat. Serrano usually gives a fresh, sharp heat; jalapeño is often milder and less intense, so the result will not taste exactly the same. A small amount of cayenne can add heat in a pinch, but it lacks the fresh chili flavor.
Try boneless thighs. Boneless, skinless thighs work, but they cook faster and will not have crisp skin. Add them to the pan after the sweet potatoes have roasted for 15 minutes, then begin checking after about 20 minutes. Use the thermometer and cook until every piece reaches 165°F (74°C); the exact time depends on thickness.
Use bottled piri-piri sauce. If using a prepared sauce, check its salt and heat before adding extra seasoning. Brush a few tablespoons over the chicken and serve additional sauce separately, following the bottle’s storage directions once opened. You may still want the lemon and garlic flavors, but taste first because bottled sauces often already contain both.
Change the vegetables. Swap up to half of the sweet potato for chunks of red onion or bell pepper, adding them when the chicken goes into the oven so they do not overcook. Carrots can replace some of the sweet potato, but cut them into slim pieces because they may take longer to soften. Keep the pan uncrowded; if vegetables overlap heavily, they will steam instead of browning.
Storage and Reheating
Refrigerate leftovers within 2 hours of cooking in a shallow, covered container. Keep the chicken and vegetables together or separate them if that makes portioning easier; they will keep for 3–4 days in the refrigerator. For longer storage, freeze cooled portions in airtight freezer-safe containers for up to 2–3 months for best quality. Thaw frozen portions in the refrigerator rather than on the counter.
For the best skin and vegetable texture, reheat portions on a baking sheet in a 350°F (175°C) oven until hot throughout, usually about 15–20 minutes from refrigerated, depending on portion size. Cover loosely with foil if the chicken is browning too quickly, then uncover near the end to help the skin crisp. A microwave is convenient for a single serving, though the skin will soften; heat in short bursts and turn the pieces as needed. Reheat leftovers to 165°F (74°C), checking the center with a food thermometer. Do not keep reheated leftovers at room temperature for more than 2 hours.
Frequently Asked Questions
Can I make the piri-piri sauce ahead?
Yes. Blend the sauce up to 2 days ahead and refrigerate it in a clean, covered container. Keep the portion intended for serving separate from the raw chicken, and stir the sauce before using because the oil may separate. If you prepare it in advance, use a clean spoon each time you take some from the container.
Can I skip the 30-minute marinade?
You can, although the chicken will have a less pronounced chili-and-lemon flavor. If time is short, coat the thighs while the oven heats and let them stand in the refrigerator for as long as you can manage. Do not leave raw chicken out on the counter to speed up marinating; keep it chilled until it goes into the oven.
Can I use chicken breasts instead of thighs?
Yes, but breasts are leaner and may dry out if cooked for the same length of time. Use similarly sized pieces and start checking them before the thighs’ usual cooking time. They are safe when the thickest part reaches 165°F (74°C), measured with a thermometer. If using breasts and thighs together, take each piece out as it reaches temperature and keep the potatoes roasting if they need more time.
Why are my sweet potatoes soft instead of browned?
They may be cut too small, crowded, or coated with too much moisture. Spread the pieces in a single layer with a little space between them, and use a broad, rimmed pan rather than a deep dish. If the pan looks crowded, roast the potatoes on a second sheet. A little softening is expected where the chicken juices run, while the exposed edges should brown.
Is this dish very spicy?
The heat depends mostly on the number and type of chilies and whether their seeds and inner ribs are included. Two bird’s eye chilies with the seeds removed give a noticeable but generally moderate kick; four with seeds can be quite hot. Start conservatively, taste the sauce before adding it to the chicken, and serve extra sauce at the table so each person can adjust their portion.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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