Sheet Pan Pesto Chicken with Asparagus Tomatoes and Walnuts
Sheet Pan Pesto Chicken with Asparagus Tomatoes and Walnuts delivers a bright, herbaceous dinner with tender chicken, crisp asparagus, and juicy tomatoes. The creamy pesto and toasted walnuts add texture and depth, making it an easy weeknight dinner that feels special. Perfect for spring meals, it is quick to assemble and impressive on the table.
Equipment
- Food Processor
- Rimmed Baking Sheet
- Parchment Paper
- Instant read thermometer
- Spatula
Ingredients
- 1 1/2 cup (48 g) packed fresh basil leaves Provide aromatic herbal base and vibrant green color while binding oils and nuts into a cohesive pesto; finely packed leaves yield concentrated basil flavor that brightens the whole dish and complements the chicken and vegetables.
- 1/4 cup Fishers Walnuts Halves and Pieces Add earthy crunch and rich, slightly bitter nuttiness when pulsed into the pesto; halves and pieces contribute texture contrast and toasted depth to balance the bright basil and parmesan.
- 1/4 cup finely shredded parmesan cheese Impart salty, umami-rich savory notes and creamy texture to the pesto when finely shredded; melts smoothly into the oil and nuts to create a cohesive, flavorful sauce that enhances the chicken's savory profile.
- 2 cloves garlic, peeled Introduce pungent, aromatic heat and savory complexity when minced into the pesto; garlic helps emulsify the oil and intensifies the overall flavor without overpowering the basil and cheese.
- 1/2 cup olive oil Provide a silky mouthfeel and carry fat-soluble flavors throughout the pesto; olive oil emulsifies with cheese and nuts to create a glossy sauce that coats chicken and vegetables evenly during roasting.
- Salt and freshly ground black pepper Season and balance flavors to enhance brightness, reduce bitterness, and elevate savory components; salt and freshly ground pepper bring out the pesto's herbs and the natural sweetness of tomatoes and asparagus.
- 1 1/2 lbs boneless skinless chicken breasts, diced into 1-inch pieces Supply lean protein and a neutral canvas for the pesto to cling to when diced; small, uniform pieces cook quickly and evenly on a sheet pan, absorbing flavors while maintaining juicy texture.
- 1 lb asparagus (don't use thick spears), tough ends trimmed and discarded remaining diced into 1 1/2-inch pieces Offer tender green vegetable texture and mild grassy flavor when trimmed and diced; appropriately sized spears roast evenly, adding freshness and a slight snap that complements the pesto-coated chicken.
- 1 pint fresh grape tomatoes (2 cups) Contribute juicy sweetness and burstable acidity as a fresh counterpoint to the rich pesto; grape tomatoes roast to concentrate flavors and add bright, poppable morsels throughout the sheet pan.
- 1/2 cup Fishers Walnuts Halves and Pieces Provide additional crunchy nut topping and toasted flavor when sprinkled over the finished dish; halves and pieces add texture contrast and reinforce the walnut character already present in the pesto.
Instructions
- For the pesto, add basil leaves, 1/4 cup walnuts, parmesan and garlic to a food processor. Pulse until coarsely chopped.: You will hear a coarse grinding and see the basil transform from leafy to a rough paste, the aroma of basil and garlic hitting your nose and brightening the kitchen. This coarse texture is ideal because it lets pockets of walnut and parmesan remain noticeable, giving the pesto interest when roasted. The noise will shift from loud pulses to a more continuous hum as pieces break down. A common mistake is overprocessing until the mixture becomes too smooth and oily, which can make the pesto thin and less substantial on the chicken . If your processor smells warm, pause and scrape down the sides to keep the mixture cool and green.
- Add olive oil, season with salt and pepper to taste and pulse until everything is finely chopped and well combined. Set aside.: As you stream in the olive oil , the blend will glossy up and the aromas will mellow into a cohesive sauce. Taste for seasoning because the parmesan already contributes saltiness, so adjust carefully. The sheen of oil indicates a successful emulsion, and the sound will settle into a steady whirr. Avoid adding too much oil which can weigh down the pesto and prevent it from clinging to the chicken . Letting the pesto rest a few minutes allows flavors to meld before it meets heat.
- Preheat oven to 400 degrees F.: Before the sheet pan goes in, make sure the oven is fully up to temperature so the chicken sears rather than slowly steams. At 400 degrees F the exterior will brown while juices stay inside, and vegetables will roast until tender. Preheating ensures predictable timing; putting the pan into a cooling oven leads to longer cook times and potentially dry meat. If your oven runs hot or cool, use an oven thermometer to confirm accuracy.
- Line a rimmed 18 by 13-inch baking sheet with a sheet of parchment paper or spray with non-stick cooking spray.: A rimmed sheet keeps juices contained while parchment makes cleanup effortless and prevents sticking. When the surface is prepared, you'll notice less sticking and easier tossing of ingredients. If you skip this step, juices can scorch onto the pan which makes cleaning harder and can create bitter aromas. Use a sheet with rims to collect released tomato juices so you can drain them if needed.
- Place chicken and asparagus on sheet pan, pour over 1/4 cup of the basil pesto.: When the chicken and asparagus hit the pan, arrange them so they sit in a single layer for even heat exposure; pouring 1/4 cup pesto will tint and lightly coat the pieces. You should see a glossy green sheen and smell fresh herbs. The visual cue of coated pieces indicates pesto coverage. Be careful not to overload with pesto at this stage, which can prevent proper browning; you can always add more later for brighter herb flavor.
- Season chicken and asparagus with salt and pepper and toss everything to evenly coat.: Tossing distributes seasoning and ensures each bite is balanced, creating a mix of savory and herbaceous flavors. When you toss, you will hear gentle clinks as pieces move and see pesto redistribute into nooks and crevices. A common error is uneven seasoning, leaving some pieces bland; take a moment to taste and adjust. Uniformly coated pieces roast more evenly and pick up better color.
- Spread into an even layer (don't let chicken pieces overlap) and roast in preheated oven for 10 minutes.: The even layer is crucial so heat circulates uniformly, giving chicken edges a caramelized finish while the interiors stay juicy. You will hear light sizzling and begin to smell a nutty basil scent as surfaces brown. If pieces overlap, cooking will be inconsistent and some bites may remain underdone. Use a spatula to nudge pieces apart if they crowd, and resist the urge to open the oven often, which can drop temperature and extend cook time.
- Remove from oven, carefully drain off excess liquid from one corner if needed (use a spatula as a guard to keep the ingredients from falling).: After the first roast you'll notice juices pooled on the pan from the chicken and tomatoes. Draining prevents the ingredients from stewing and helps the second roast brown rather than steam. The aroma at this point is richer and slightly toasted. Be cautious while draining to avoid losing pieces; use a spatula as a shield. If you skip draining, your final texture may be soggier with less pronounced browning.
- Add tomatoes, toss everything and return to oven and continue to roast until chicken is cooked through (larger pieces should be 165 degrees in center), about 8 - 12 minutes longer.: Introducing the grape tomatoes at this stage invites them to blister and release sweet juices that mingle with pesto without dissolving completely. You'll hear occasional pops as their skins burst and smell a concentrated tomato sweetness. Use an instant read thermometer to confirm the chicken reaches 165 degrees at the center. The error to avoid is adding tomatoes too early which causes them to collapse and lose their pleasant burst; timing keeps them plump and flavorful.
- Remove from oven, spoon over another 1/4 cup of the pesto and toss (or just add the 1/4 cup to individual servings). Sprinkle in walnuts.: At removal, spooning extra pesto reawakens bright herbal flavors that the oven slightly mellowed, and tossing distributes warm sauce over everything. The sound will be gentle as walnuts fall into place and the look will become more glossy and vibrant. Adding nuts here preserves crunch, because if they roast too long they can become soft or bitter. Avoid stirring too vigorously which can mash tomatoes; gentle tossing protects texture.
- Serve immediately with more pesto if desired (or just reserve remaining pesto in refrigerator for another use - it can be frozen also).: Serving right away gives you the best texture contrast between warm chicken and crisp walnuts, and the aroma is at its peak. If you have leftover pesto, refrigerate for up to a week or freeze in small portions for later. A common mistake is letting the dish sit too long which softens the vegetables and dulls the fresh basil flavor, so plate promptly for the best experience.
Notes
- Swap nuts: If you prefer a milder nuttiness, try substituting the walnuts with toasted almonds in the pesto and as a topping for a subtly different crunch and flavor profile.
- Pesto shortcut: If short on time, use store bought pesto but brighten it with a squeeze of lemon and an extra tablespoon of fresh chopped basil so it tastes freshly made.
- Adjust chicken size: For faster cooking, dice the chicken smaller; for juicier results, use slightly larger pieces and check temperature for doneness to avoid overcooking.
- Vegetable swaps: If asparagus is out of season, substitute thin green beans or broccolini that roast well at 400 degrees F; ensure similar size for even cooking.
- Make ahead pesto: Prepare the pesto up to a week in advance and store it chilled, or freeze in ice cube trays for convenient single use portions.