This 5-ingredient slow cooker Flag Day Feast Chicken is the kind of set-it-and-forget-it meal that makes weeknights feel like a small celebration. Using raw chicken leg quarters as the base, we lean on a simple trio of pantry staples plus one fresh ingredient to create a patriotic-looking dish with vibrant red and blue accents. The colors nod to classic American cookout flavors—think sweet-tangy barbecue and bright pops of pepper—while the slow cooker does all the work, yielding tender, pull-apart chicken with almost no hands-on time.
Serve these saucy chicken quarters over a bed of buttered rice, mashed potatoes, or egg noodles to soak up all the flavorful juices. A crisp green salad, grilled or steamed corn, or simple roasted vegetables make excellent sides. If you’re leaning into the Flag Day theme, round out the table with cornbread, a tangy coleslaw, and a simple berry dessert to echo the red-and-blue notes in the dish.
5-Ingredient Slow Cooker Flag Day Feast Chicken
Servings: 4

Ingredients
4 raw chicken leg quarters (about 3 to 3 1/2 pounds total), skin-on or skinless
1 cup thick barbecue sauce (preferably a classic tomato-based style)
1 cup roasted red peppers from a jar, drained and sliced into strips
1/2 cup sliced pitted kalamata or other dark purple/black olives (for a deep blue-black accent)
1 medium red onion, thinly sliced
Directions
Lightly trim any excess fat or loose skin from the raw chicken leg quarters, but leave most of the skin on if you enjoy richer flavor. Pat the chicken dry with paper towels so it will season and brown slightly better in the slow cooker.
Scatter the sliced red onion evenly across the bottom of a 5- to 6-quart slow cooker. This creates a flavorful bed that keeps the chicken slightly elevated and infuses the juices with sweetness.
Arrange the raw chicken quarters in a single snug layer on top of the onions, meaty side down as much as possible. It is fine if they overlap slightly; they will shrink as they cook.
In a small bowl, stir together the barbecue sauce and the sliced roasted red peppers until the peppers are well coated. Pour this mixture evenly over the chicken quarters, making sure each piece is glazed with some of the sauce and dotted with red pepper strips.
Sprinkle the sliced kalamata olives over the sauced chicken, distributing them so each piece gets some of the deep blue-black color and briny flavor. At this stage, the slow cooker should show a clear contrast between the pale raw chicken, the red sauce and peppers, and the dark olives.
Cover the slow cooker with the lid and cook on LOW for 6 to 7 hours, or on HIGH for 3 to 4 hours, until the chicken is very tender and reaches an internal temperature of at least 165°F (74°C) in the thickest part of the thigh, not touching bone. The meat should pull away from the bone easily.
Once done, taste the cooking juices and adjust seasoning if desired with a pinch of salt or a splash more barbecue sauce stirred into the liquid. If you prefer a slightly thicker sauce, you can remove the chicken to a platter, tent it with foil, and simmer the juices in a saucepan on the stove for 5 to 10 minutes to reduce before spooning them back over the chicken.
Serve the chicken quarters hot, spooning plenty of the onions, peppers, olives, and sauce over each portion. Garnish with a few extra sliced olives or roasted peppers if you’d like to emphasize the red-and-blue look for a holiday table.
Variations & Tips
For a slightly smokier profile, choose a hickory-smoked or chipotle-style barbecue sauce; for sweeter results, go with a brown sugar–heavy Kansas City–style sauce. If you prefer milder flavors, substitute the kalamata olives with mild black olives, which still give a dark, blue-black accent but with less briny intensity. For extra heat, add a pinch of red pepper flakes or a few slices of fresh jalapeño along with the onions. You can also remove the chicken skin after cooking for a leaner meal, or shred the meat off the bones and toss it back into the sauce for sandwiches or sliders. If you’d like a more pronounced red-and-blue visual, finish the dish with a handful of chopped fresh flat-leaf parsley or chives for a green contrast and a sprinkle of crumbled mild feta for a white accent on top of the red peppers and dark olives. Food safety tips: Always start with fully thawed chicken; avoid using partially frozen quarters in the slow cooker, as they can sit too long in the temperature “danger zone.” Do not open the slow cooker frequently during cooking, since repeated heat loss can extend cooking time and keep the chicken below a safe temperature for too long. Use a clean instant-read thermometer to confirm that the thickest part of each piece reaches at least 165°F (74°C). Refrigerate leftovers within 2 hours of cooking in shallow containers, and reheat to at least 165°F before serving again.