Grilled Chicken with Nectarine BBQ Sauce

Instructions

1. 1Mix the salt and pepper together in a small bowl; set aside.
2. 2If using chicken breasts (either boneless or bone-in), cut them in half crosswise. Pat the chicken pieces dry with paper towels and place on a baking sheet. Season all over, using all of the salt and pepper mixture. Refrigerate uncovered for at least 6 hours or preferably overnight.

For the sauce:

1. 1Heat the oil in a medium saucepan over medium heat until shimmering. Add the onion, chipotle, garlic, and measured salt. Season with pepper and cook, stirring occasionally, until the onion has softened, about 5 minutes.
2. 2Add the ketchup and cook, stirring occasionally, until fragrant and slightly darkened in color, about 2 minutes. Add the remaining ingredients, stir to combine, and cook until the mixture is bubbling around the edges, about 5 minutes.
3. 3Reduce the heat to medium low and simmer, stirring occasionally, until the nectarines are completely softened and starting to fall apart, about 15 to 20 minutes.
4. 4Transfer the mixture to a blender. Remove the small cap from the blender lid (the pour lid) and cover the space with a kitchen towel (this allows steam to escape and prevents the lid from popping off). Blend until smooth. Taste and season with salt and pepper as needed. Equally divide the sauce between 2 small bowls and set aside to cool to room temperature. Set aside 1 bowl of sauce for serving and the other bowl for brushing onto the chicken and nectarines while they cook on the grill.

To finish:

1. 1Remove the chicken from the refrigerator and let it sit at room temperature for about 15 minutes. Meanwhile, heat an outdoor grill or grill pan to medium (about 350°F to 450°F).
2. 2When the grill is ready, rub the grill grates with a towel dipped in vegetable oil. Place the chicken on the grill (skin-side down if using skin-on), cover the grill, and cook until grill marks appear on the bottom, about 5 minutes. Flip the chicken pieces, cover the grill, and cook until grill marks appear on the second side, about 5 minutes more.
3. 3Flip the chicken again and, using the bowl of sauce set aside for the chicken and nectarines, generously brush the chicken. Cover the grill and cook for 5 minutes. Flip and brush the chicken, and continue to flip and brush every 5 minutes (reserving about 1/3 cup of the sauce for the nectarines), until an instant-read thermometer inserted into the thickest chicken piece reads 160°F to 165°F and the meat near the bone is no longer pink, about 10 to 15 minutes more (about 25 to 30 minutes total cooking time). Remove the chicken to a clean serving platter and cover loosely with foil; set aside.
4. 4Scrape down the grill with a grill brush and oil the grates again. Brush the nectarines all over with the remaining 1/3 cup of the sauce. Place cut-side down on the grill, cover the grill, and cook until grill marks appear on the bottom, about 4 to 5 minutes. Using a flat spatula, flip the nectarines and cook until grill marks appear on the second side and the nectarines are slightly softened, about 4 to 5 minutes more. Remove to the serving platter with the chicken and serve immediately, passing the reserved bowl of barbecue sauce.