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+ servings
Slow roasted chicken in a white casserole dish with vegetables.
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4.84 from 6 votes

BBQ Slow-Roasted Chicken Recipe

Roasted until sticky and golden, this oven-roasted whole barbecue chicken is what your dinner dreams are made of. It’s got smoky-sweet flavor, juicy meat that pulls right off the bone, and a glossy BBQ glaze that turns irresistibly caramelized in the oven. Add some crispy potatoes and caramelized veggies to the pan, and you’ve got a dish that everyone will talk about - with their mouths full.
Prep Time20 minutes
Cook Time1 hour 50 minutes
Total Time2 hours 10 minutes
Course: dinner
Cuisine: American
Keyword: american, barbecue, barbecue sauce, bbq chicken, bbq sauce, dinner, grill, keto, low carb, main course, main dish, one-pan, paleo, sumac bbq sauce, whole chicken
Servings: 6 people
Calories: 550kcal

Ingredients

  • 2 kg 4.4lbs whole chicken
  • 700 ml 3 cups BBQ sauce, homemade or store-bought
  • 2 tablespoons olive oil
  • 1 kg 2.2lbs roasting vegetables of choice (potatoes, carrots, brussels sprouts, etc. See post for more ideas)

Homemade BBQ Sauce Recipe (optional)

  • 690 g 2 1/2 cups Passata, or canned tomato sauce
  • 3 tablespoons liquid smoke
  • 105 g 1/2 cup stevia, brown sugar substitute, or sugar/sweetener of choice
  • 2 1/4 teaspoons allspice
  • 2 teaspoons sumac or 118ml (1/2 cup apple cider/white vinegar)
  • 1/2-1 teaspoon hot sweet, or smoky paprika, adjust to your taste
  • 3/4 teaspoon cumin
  • 3/4 teaspoon ground black pepper
  • 2-3 teaspoons salt to taste

Instructions

1. Make BBQ Sauce (optional):

  • Add all of the BBQ sauce ingredients into a pot.
  • Cook on medium-high heat stirring occasionally for about 10-15 minutes, until the sauce has thickened. Allow it to cool to room temperature before step 2.

2. Marinade the chicken:

  • Place the chicken in a large, ziplock bag with 1.5 cups of BBQ sauce and olive oil, and refrigerate overnight. Save the rest of the BBQ Sauce for tomorrow.
    Chicken and BBQ sauce in a ziplock bag.

3. Bake the chicken:

  • Preheat the oven to 200 degrees C/ 390 degrees F.
  • Place chicken upside down in a roasting tray, covering the surface of the chicken with any sauce leftover in the ziplock bag. I used a pastry brush to brush the bbq sauce over the chicken evenly.
    Brushing chicken with BBQ sauce in a roasting pan.
  • Roast chicken in the preheated oven for 15 minutes.
  • Take it out after 15 minutes, and reduce the oven temperature to 140°C/285°F. 
  • Turn the chicken over, add the veggies and any remaining BBQ sauce to the pan, stir the vegetables, cover the roasting pan with aluminum foil or a lid, and bake it for one hour.
    Adding vegetables and BBQ sauce to the chicken in the roasting pan.
  • After an hour, take it out and increase the temperature back up to 200°C/390°F. 
  • Remove the foil or lid.
    Putting a white lid on a roasting pan.
  • Place back into the oven, uncovered, and let the chicken cook for 35 minutes.
    Lid removed from the chicken dinner roasting pan.
  • Check the chicken is ready by inserting a meat thermometer into the thickest part of the thigh. When the instant-read thermometer reads 75°C/165°F it is ready.
  • Let the chicken rest for 10 minutes before slicing. This keeps the chicken juices in the chicken, making the tender meat incredibly moist.

Notes

  • Size matters: Bigger chickens take longer to cook. Always go by internal temp, not just time.
  • Use a thermometer: The most reliable way to know it’s done. 75°C / 165°F in the thigh = perfection.
  • Rest before slicing: Ten minutes of patience keeps the meat juicy and tender. Don’t skip it.
  • Flip for even cooking: Starting breast-side down helps keep the white meat from drying out.
  • Toss those veggies: Stir them in the sauce before covering so they soak up every last drop of flavor.
  • Homemade sauce cool-down: Let your sauce cool before pouring it over the chicken, or it won’t cling properly.
 

Storage instructions

  • Fridge: Let the chicken cool completely, then store it in an airtight container in the refrigerator for 3 to 4 days.
  • Freezer: Remove the meat from the bones and freeze in a sealed container or freezer bag for up to 3 months.
  • Reheating: Warm it through in the oven or microwave until piping hot. Add a splash of water or BBQ sauce to keep it moist.
  • Leftover tip: Shred the meat and toss it through salads, beans, or roasted veggies for an easy next-day meal.

Nutrition

Serving: 1g | Calories: 550kcal | Carbohydrates: 7.9g | Protein: 78.4g | Fat: 20.1g | Saturated Fat: 5.5g | Polyunsaturated Fat: 6g | Cholesterol: 237mg | Sodium: 1006mg | Fiber: 1.4g